Give the page background a casino felt texture

Replace the flat radial green with a layered body background: a soft
overhead light and an edge vignette over a fine grain tiled across the
green gradient.

The grain is a tiny seamless SVG tile (feTurbulence fractal noise mapped
to semi-transparent black speckles, stitchTiles so it repeats without
seams) committed under web/assets, so it rides the existing asset
pipeline and works offline; the palette and panel/card colors are
unchanged.

README.md

@@ -1,9 +1,10 @@
 # tavolo
 
-A platform for multiplayer card games. Two games are included:
+A platform for multiplayer card games. Three games are included:
 **scopone scientifico** — the four-player, fixed-partnership Italian card
-game — and **briscola**, in its classic two-player and four-player
-partnership (*briscola a quattro*) variants:
+game — **briscola**, in its classic two-player and four-player
+partnership (*briscola a quattro*) variants, and **briscola chiamata** —
+the five-player variant with a calling auction and a secret partner:
 
 - **`server/`** — backend: Python + [kaya](https://github.com/woggioni/kaya)
   framework, OIDC login, live games in Redis, match statistics in Postgres.
@@ -45,7 +46,9 @@ pigliatutto when enabled), briscola players see the deal's points and any
 *patta*; both see the running totals and must click "Understood" before
 the next hand is dealt. If someone is away the next hand is dealt
 automatically after `HAND_ACK_TIMEOUT_SECONDS` (default 30s). The
-match-ending hand is explained on the final screen.
+match-ending hand is explained on the final screen. Briscola chiamata
+plays a single deal per match, so it goes straight from the last trick to
+the final scoring screen; a 60–60 *patta* is replayed immediately.
 
 ## On your turn
 
@@ -53,12 +56,18 @@ Every turn shows a countdown (`TURN_TIMEOUT_SECONDS`, default 30s). If a
 player does not move — disconnected or fallen asleep — the server plays a
 random legal card for them (choosing among the legal captures when the
 rules require a capture), so one absent player cannot stall the table.
+Briscola chiamata arms the same countdown for its auction turns and for
+the auction winner's called-card choice: an absent bidder passes, the
+last player standing with no bid is made to bid the ace, and a timed-out
+call names a random suit of the won rank.
 
 ## Watching
 
 Anyone who has the game URL (`/game/<id>`) can watch, logged in or not:
 spectators see the table, the score and every player's captured cards
-(and scope for scopone), but never a hand and never the join code. The
+(and scope for scopone), but never a hand and never the join code. In
+briscola chiamata they also see no role labels and no side totals until
+the called card is played, so the secret partner stays secret. The
 "Copy watch link" button in the waiting room and in the game HUD copies
 the URL to share. A spectator who opens the URL before the match starts
 sees a "game not started yet" waiting room.

server/README.md

@@ -16,9 +16,10 @@ and
   scientifico, the four-player, fixed-partnership variant of the classic
   Italian card game: pure rules plus the platform adapter.
 - **`tavolo-briscola`** (`packages/tavolo-briscola/`) — briscola, the
-  Italian trick-taking game, in its classic two-player (`briscola`) and
-  four-player partnership (`briscola_a_quattro`) variants: pure rules
-  plus the platform adapter.
+  Italian trick-taking game, in its classic two-player (`briscola`),
+  four-player partnership (`briscola_a_quattro`) and five-player
+  called-partner (`briscola_chiamata`) variants: pure rules plus the
+  platform adapter.
 - **`tavolo-app`** (`packages/tavolo-app/`) — the
   composition root wiring the platform to the games, with the
   environment-driven settings and the SPA shell.
@@ -236,7 +237,9 @@ aggregate with `max`, not `sum`.
   as reported by the engine (`result` JSON — for scopone: both teams'
   final scores, winner, target score, hands played and the per-hand
   audit; for briscola: the final scores, winner, target score, deals
-  played and the per-deal audit).
+  played and the per-deal audit; for briscola chiamata: the calling side's
+  points against the defenders', the declared target, the called card and
+  whether the caller played alone).
 - `match_player` — one row per participant: the OIDC `sub`, display name,
   seat, game-defined team label (nullable), whether they won, the points
   they scored, the Elo change the match produced (`elo_delta`) and
@@ -275,7 +278,7 @@ All endpoints except `/api/health`, `/api/docs`, `/api/openapi.json`,
 | Method | Path | Description |
 |---|---|---|
 | `GET` | `/api/game-types` | The games the platform can host (for the creation dropdown), each with its `options_schema` |
-| `POST` | `/api/games` | Create a lobby game. Optional body `{"game_type": "scopone_scientifico", "options": {"target_score": 11, "napola": true, "asso_pigliatutto": false}}`; briscola games use `{"game_type": "briscola"}` or `{"game_type": "briscola_a_quattro"}` with an optional `{"target_score": 61}`. Returns the lobby (`{id, join_code, players, seats_open, ...}`) |
+| `POST` | `/api/games` | Create a lobby game. Optional body `{"game_type": "scopone_scientifico", "options": {"target_score": 11, "napola": true, "asso_pigliatutto": false}}`; briscola games use `{"game_type": "briscola"}` or `{"game_type": "briscola_a_quattro"}` with an optional `{"target_score": 61}`, and briscola chiamata uses `{"game_type": "briscola_chiamata"}` with no options. Returns the lobby (`{id, join_code, players, seats_open, ...}`) |
 | `POST` | `/api/games/join` | Join with `{"code": "ABC123"}`. The last player triggers the start and gets the game view back |
 | `GET` | `/api/games/preview?code=ABC123` | Pre-join summary of the lobby behind a code: game name/description, seated players, open seats and the engine-echoed options. `404` when the code is unknown |
 | `GET` | `/api/games/{id}` | Game snapshot. Seated players get the personalized view (own hand plus the join code); anyone else gets the read-only spectator view: table, scores, captured counts and scope, no hands and no join code |
@@ -341,6 +344,24 @@ For briscola (`briscola`, `briscola_a_quattro`) the game actions are
   every player has acknowledged, or automatically after
   `HAND_ACK_TIMEOUT_SECONDS`.
 
+For briscola chiamata the game actions are the calling auction plus play:
+
+```json
+{"action": "bid", "rank": 3}
+{"action": "bid", "points": 64}
+{"action": "pass"}
+{"action": "call", "card": "03D"}
+{"action": "play", "card": "04C"}
+```
+
+- `bid` with a `rank` calls a lower rank than the standing bid
+  (`A > 3 > K > H > J > 7 > 6 > 5 > 4 > 2`); with `points` it raises the
+  target once the standing bid is the two.
+- `pass` leaves the auction; the last player standing must bid.
+- `call` names any card of the won rank; naming one of your own cards
+  means playing alone.
+- `play` follows briscola: any card in hand is legal.
+
 After every accepted move the new state is broadcast to every connected
 client, spectators included.
 
@@ -353,7 +374,10 @@ is required), so a disconnected or idle player cannot stall the match. The
 timeout is `TURN_TIMEOUT_SECONDS` (default 30); the auto-played move is
 broadcast like any other. Deadlines fire from the shared `tavolo:deadlines`
 queue (see above), not from timers tied to client connections, so the
-match keeps progressing even with every player disconnected.
+match keeps progressing even with every player disconnected. Briscola
+chiamata uses the same timeout for its auction turns (an absent bidder
+passes; the last player standing with no bid is made to bid the ace) and
+for the called-card choice (a random suit of the won rank).
 
 ### Hand-end summary
 
@@ -416,6 +440,31 @@ player must dismiss. A play attempted in this phase is rejected with an
   four players in two fixed partnerships (seats 0/2 vs 1/3, partners
   opposite).
 
+### Briscola chiamata
+
+- 40-card Italian deck, eight cards each for five players: the whole deck
+  is dealt, so there is no stock and no face-up card.
+- The calling auction starts with the player after the dealer: each
+  player either passes (leaving the auction) or bids a lower rank than
+  the standing bid (*A > 3 > K > H > J > 7 > 6 > 5 > 4 > 2*); once the
+  standing bid is the two, the auction continues on points (62, 64, …).
+  The last player standing must bid, so every deal gets a caller.
+- The winner names any card of the won rank. If the winner holds it, the
+  caller plays alone against the other four; otherwise its holder is the
+  secret partner and the two form the calling side. The called card's
+  suit is the trump; the partner's identity stays hidden until the
+  called card is played.
+- Play and trick resolution follow briscola; eight tricks exhaust every
+  hand. The calling side must reach the declared target (61 unless
+  raised); with the plain target a 60–60 deal is a *patta* and is
+  replayed with the next dealer. A match is a single deal, so the caller
+  and partner (or the lone caller) against the other players map onto
+  the platform's two-team result, Elo and history.
+- Auction turns, the called-card choice and the plays all have their own
+  `TURN_TIMEOUT_SECONDS` deadlines: an absent bidder passes, the last
+  player standing with no bid is made to bid the ace, an absent winner's
+  call names a random suit of the won rank, and plays are auto-played.
+
 ## Development
 
 ```sh
@@ -493,8 +542,9 @@ packages/tavolo-briscola/     # briscola game (own pyproject + tests)
   src/tavolo/briscola/
   ├── state.py                # BriscolaState / PlayerState / Card / Trick, JSON (de)serialization
   ├── engine.py               # pure briscola rules (2- and 4-player)
+  ├── chiamata.py             # pure briscola chiamata rules (5-player, auction, secret partner)
   ├── errors.py               # briscola-specific rule violations
-  └── plugin.py               # BriscolaEngine + BriscolaQuattroEngine adapters
+  └── plugin.py               # BriscolaEngine + BriscolaQuattroEngine + BriscolaChiamataEngine
 packages/tavolo-app/          # deployable app: composition root (own pyproject)
   src/tavolo/
   ├── app.py                  # session/OIDC/Tortoise/OpenAPI/Platform/DeadlineScheduler mixins

server/packages/tavolo-app/src/tavolo/app.py

@@ -39,7 +39,11 @@ from kaya.oidc import OIDCConfig, OIDCProviders
 from kaya.openapi import OpenAPIMixin
 from kaya.session import SessionMixin
 from redis.asyncio import Redis
-from tavolo.briscola import BriscolaEngine, BriscolaQuattroEngine
+from tavolo.briscola import (
+    BriscolaChiamataEngine,
+    BriscolaEngine,
+    BriscolaQuattroEngine,
+)
 from tavolo.platform import GameRegistry, Platform, PlatformMixin
 from tavolo.platform.deadlines import DeadlineScheduler, DeadlineSchedulerMixin
 from tavolo.platform.store import GameStore, InMemoryGameStore, RedisGameStore
@@ -144,6 +148,12 @@ registry.register(
         hand_ack_timeout_seconds=settings.hand_ack_timeout_seconds,
     )
 )
+registry.register(
+    BriscolaChiamataEngine(
+        turn_timeout_seconds=settings.turn_timeout_seconds,
+        hand_ack_timeout_seconds=settings.hand_ack_timeout_seconds,
+    )
+)
 log.info("registered games: %s", ", ".join(e.id for e in registry.all()))
 log.debug(
     "game timeouts: hand_ack=%ds turn=%ds",

server/packages/tavolo-briscola/README.md

@@ -2,10 +2,12 @@
 
 Briscola — the Italian trick-taking game — as a
 [`tavolo-platform`](../tavolo-platform/README.md) game implementation.
-Two variants share one rules core:
+Three variants share one rules core:
 
 - `briscola` — the classic two-player game;
-- `briscola_a_quattro` — four-player fixed-partnership briscola.
+- `briscola_a_quattro` — four-player fixed-partnership briscola;
+- `briscola_chiamata` — five-player briscola with a calling auction and a
+  secret partner.
 
 ## Contents
 
@@ -13,27 +15,42 @@ Two variants share one rules core:
   stock, face-up briscola, tricks, scores, deadlines), `PlayerState`,
   `Card`, `TrickCard`, `Trick`, with JSON (de)serialization. No session
   envelope, no transport, no I/O.
-- `engine.py` — the pure rules engine: deck, deals, trick resolution
-  (trump first, then the led suit; strength ace > three > king > horse >
-  jack > 7 > 6 > 5 > 4 > 2), the draw order (trick winner first, the
-  face-up briscola last), card points (ace 11, three 10, king 4, horse 3,
-  jack 2), patta re-deals and the target-score match end, deal-end
-  acknowledgements and auto-play. Deterministic and I/O-free apart from
-  logging, so the whole rule set is unit-testable.
+- `engine.py` — the pure rules engine for two- and four-player briscola:
+  deck, deals, trick resolution (trump first, then the led suit; strength
+  ace > three > king > horse > jack > 7 > 6 > 5 > 4 > 2), the draw order
+  (trick winner first, the face-up briscola last), card points (ace 11,
+  three 10, king 4, horse 3, jack 2), patta re-deals and the
+  target-score match end, deal-end acknowledgements and auto-play.
+  Deterministic and I/O-free apart from logging, so the whole rule set is
+  unit-testable.
+- `chiamata.py` — the pure rules engine for five-player briscola
+  chiamata: `ChiamataState`/`ChiamataPlayer`/`Auction` (JSON
+  round-trip), the 8-card deal with no stock, the descending calling
+  auction with point raises, the winner's call (including calling one's
+  own card, which means playing alone), the called-card reveal, single-
+  deal scoring with the 60–60 patta and the auto-actions for timeouts.
 - `errors.py` — briscola-specific errors (`CardNotInHand`); every other
   failure mode is a shared `tavolo.platform.errors` subclass.
-- `plugin.py` — `BriscolaEngine` and `BriscolaQuattroEngine`
-  (`GameEngine`): the platform-facing adapters. They validate the
-  `target_score` creation option (61–120, default 61) and extract the
-  `MatchResult` (teams, winner, per-player scores and the match summary
-  persisted as the match's JSON `result`).
+- `plugin.py` — `BriscolaEngine`, `BriscolaQuattroEngine` and
+  `BriscolaChiamataEngine` (`GameEngine`): the platform-facing adapters.
+  The first two validate the `target_score` creation option (61–120,
+  default 61) and extract the `MatchResult` (teams, winner, per-player
+  scores and the match summary persisted as the match's JSON `result`).
+  Briscola chiamata takes no creation options.
 
 Timeouts are constructor arguments (`turn_timeout_seconds`,
 `hand_ack_timeout_seconds`), wired from the environment by the
-application composition root.
+application composition root. Briscola chiamata uses the turn timeout
+for its auction turns, the called-card choice and the plays: an absent
+bidder passes, the last player standing with no bid is made to bid the
+ace, and an absent winner's call names a random suit of the won rank. It
+never enters the between-deals acknowledgement phase (a single deal ends
+the match), so the hand-ack timeout is accepted but unused.
 
 ## Rules
 
+### Briscola (two-player and four-player)
+
 - Three cards per player; the next card is turned face up: its suit is
   the trump (briscola) for the deal and it is the last card drawn.
 - The winner of a trick is the highest trump, or the highest card of the
@@ -47,6 +64,31 @@ application composition root.
 - Between deals of an unfinished match every player acknowledges the
   summary (or the hand-end timeout deals on), exactly like scopone.
 
+### Briscola chiamata (five-player)
+
+- The whole 40-card deck is dealt out, eight cards each: there is no
+  stock and no face-up card.
+- Starting with the player after the dealer, each player either passes
+  (leaving the auction for good) or bids a **lower** rank than the
+  standing bid on the ladder *A > 3 > K > H > J > 7 > 6 > 5 > 4 > 2*;
+  the first bidder may bid any rank. Once the standing bid is the two,
+  the auction continues on points instead (62, 64, …): the calling side
+  then has to reach the raised target. The last player standing must
+  bid, so a deal always gets a caller.
+- The auction winner names any card of the winning rank. If the winner
+  holds it, they **play alone** against the other four; otherwise its
+  holder is the **secret partner** and the two form the calling side.
+  The called card's suit is the trump for the deal. The partner's
+  identity is hidden until the called card is played.
+- Play follows briscola: the player after the dealer leads, the highest
+  trump (or highest led-suit card) takes the trick and leads the next
+  one; eight tricks exhaust every hand.
+- The calling side (caller plus partner, or the lone caller) must reach
+  the declared target — 61 unless the auction raised it. With the plain
+  target a 60–60 deal is a patta and is replayed with the next dealer.
+  A match is a single deal, so the two sides map onto the platform's
+  two-team result (Elo rating, match history).
+
 ## Development (from `server/`)
 
 ```sh
@@ -54,5 +96,5 @@ application composition root.
 .venv/bin/python -m mypy -p tavolo.briscola
 ```
 
-`test_engine.py` covers the pure rules; `test_plugin.py` covers the
-platform contract (actions, deadlines, serialization, results).
+`test_engine.py`/`test_plugin.py` cover the two classic variants;
+`test_chiamata.py`/`test_chiamata_plugin.py` cover briscola chiamata.

server/packages/tavolo-briscola/src/tavolo/briscola/__init__.py

@@ -1,20 +1,31 @@
 """Briscola: tavolo's trick-taking game implementation.
 
-Two variants share the same rules core and platform adapter:
+Three variants share the same rules core and platform adapter:
 
 - :class:`~tavolo.briscola.plugin.BriscolaEngine` — classic two-player
   briscola (``briscola``);
 - :class:`~tavolo.briscola.plugin.BriscolaQuattroEngine` — four-player
-  fixed-partnership briscola a quattro (``briscola_a_quattro``).
+  fixed-partnership briscola a quattro (``briscola_a_quattro``);
+- :class:`~tavolo.briscola.plugin.BriscolaChiamataEngine` — five-player
+  briscola chiamata (``briscola_chiamata``).
 
 The pure rules (:mod:`tavolo.briscola.engine`,
-:mod:`tavolo.briscola.state`) know nothing about HTTP, Redis or Postgres;
-:mod:`tavolo.briscola.plugin` adapts them to the platform's
+:mod:`tavolo.briscola.state` and :mod:`tavolo.briscola.chiamata`) know
+nothing about HTTP, Redis or Postgres; :mod:`tavolo.briscola.plugin`
+adapts them to the platform's
 :class:`~tavolo.platform.engine.GameEngine` contract so the
 game-independent platform can host them.
 """
 from __future__ import annotations
 
-from .plugin import BriscolaEngine, BriscolaQuattroEngine
+from .plugin import (
+    BriscolaChiamataEngine,
+    BriscolaEngine,
+    BriscolaQuattroEngine,
+)
 
-__all__ = ["BriscolaEngine", "BriscolaQuattroEngine"]
+__all__ = [
+    "BriscolaChiamataEngine",
+    "BriscolaEngine",
+    "BriscolaQuattroEngine",
+]

server/packages/tavolo-briscola/src/tavolo/briscola/chiamata.py

@@ -0,0 +1,953 @@
+"""Pure rules engine for briscola chiamata.
+
+Briscola chiamata is the five-player variant of briscola. The 40-card
+deck is dealt out entirely (8 cards each, no stock): there is no face-up
+briscola card. Instead the players auction off the right to call a
+partner:
+
+* starting with the player after the dealer, each player either passes
+  (leaving the auction for good) or bids a rank lower than the standing
+  bid on the ladder ``A > 3 > K > H > J > 7 > 6 > 5 > 4 > 2``; the first
+  bidder may bid any rank. Once the standing bid is the 2, further bids
+  raise the points the calling side must reach instead (62, 64, ...).
+* the last remaining bidder wins and names the exact card of the winning
+  rank (any suit). If the winner holds the named card they play alone
+  against the other four; otherwise its holder is the **secret partner**
+  and the two form the calling side. The called card's suit is the trump
+  (*briscola*) for the whole deal.
+* play and scoring follow briscola. The calling side must reach the
+  declared target (61 unless raised); a 60-60 deal with the plain target
+  is a **patta** and is replayed.
+
+A match is a single deal (patta replays aside), so the two sides map
+onto the platform's two-team result (Elo rating, match history). The
+partner's identity stays hidden until the called card is played, at
+which point the roles are revealed.
+
+Like :mod:`tavolo.briscola.engine` this module is deterministic and
+I/O-free apart from logging: it mutates (or reads)
+:class:`~tavolo.briscola.chiamata.ChiamataState` and raises
+:class:`~tavolo.platform.errors.GameError` subclasses on rule
+violations. The platform-facing adapter is
+:class:`~tavolo.briscola.plugin.BriscolaChiamataEngine`.
+"""
+from __future__ import annotations
+
+import random
+from dataclasses import dataclass, field
+from datetime import datetime, timedelta, timezone
+from logging import getLogger
+from typing import Any, Dict, List, Optional, Tuple
+
+from tavolo.platform.errors import (
+    AlreadyJoined,
+    GameFinished,
+    GameNotStarted,
+    IllegalMove,
+    LobbyFull,
+    NotYourTurn,
+)
+
+from .engine import TRICK_STRENGTH, card_points, shuffled_deck
+from .errors import CardNotInHand
+from .state import (
+    DEFAULT_TURN_TIMEOUT_SECONDS,
+    PHASE_FINISHED,
+    PHASE_LOBBY,
+    PHASE_PLAYING,
+    SUITS,
+    Card,
+    Trick,
+    TrickCard,
+    parse_card,
+)
+
+log = getLogger(__name__)
+
+# Five seats, the whole 40-card deck dealt out.
+PLAYER_COUNT = 5
+HAND_SIZE = 8
+
+PHASE_AUCTION = "auction"
+PHASE_CALLING = "calling"
+
+# The two sides of the match: the caller (plus the partner, when there is
+# one) against the other players.
+SIDE_CALLER = 0
+SIDE_DEFENDERS = 1
+SIDE_NAMES = ("Chiamante", "Difensori")
+
+# Role labels carried by the personalized view once they are public.
+ROLE_CALLER = "Chiamante"
+ROLE_PARTNER = "Socio"
+ROLE_DEFENDER = "Difensori"
+
+# Points the calling side must reach: 61 unless the auction raised it.
+DEFAULT_TARGET = 61
+MIN_TARGET = 61
+MAX_TARGET = 120
+
+# Rank ladder of the auction, strongest first: ace, three, king, horse,
+# jack, then the plain ranks downwards.
+BID_LADDER = (1, 3, 10, 9, 8, 7, 6, 5, 4, 2)
+_BID_INDEX: Dict[int, int] = {rank: index for index, rank in enumerate(BID_LADDER)}
+
+_rng = random.SystemRandom()
+
+
+# -- state -----------------------------------------------------------------
+
+
+@dataclass
+class ChiamataPlayer:
+    sub: str
+    name: str
+    seat: int
+    hand: List[Card] = field(default_factory=list)
+    captured: List[Card] = field(default_factory=list)
+
+    def to_json(self) -> Dict[str, Any]:
+        return {
+            "sub": self.sub,
+            "name": self.name,
+            "seat": self.seat,
+            "hand": [c.to_json() for c in self.hand],
+            "captured": [c.to_json() for c in self.captured],
+        }
+
+    @staticmethod
+    def from_json(data: Dict[str, Any]) -> "ChiamataPlayer":
+        return ChiamataPlayer(
+            sub=str(data["sub"]),
+            name=str(data["name"]),
+            seat=int(data["seat"]),
+            hand=[Card.from_json(c) for c in data.get("hand", [])],
+            captured=[Card.from_json(c) for c in data.get("captured", [])],
+        )
+
+
+@dataclass
+class Bid:
+    """One auction bid: a rank, or (at the 2) a raised points target."""
+
+    seat: int
+    rank: int
+    points: int
+
+    def to_json(self) -> Dict[str, Any]:
+        return {"seat": self.seat, "rank": self.rank, "points": self.points}
+
+    @staticmethod
+    def from_json(data: Dict[str, Any]) -> "Bid":
+        return Bid(
+            seat=int(data["seat"]),
+            rank=int(data["rank"]),
+            points=int(data["points"]),
+        )
+
+
+@dataclass
+class Auction:
+    """The state of the calling auction."""
+
+    # Seat to act; always one of ``active``.
+    turn: int = 0
+    active: List[int] = field(default_factory=list)
+    passed: List[int] = field(default_factory=list)
+    current: Optional[Bid] = None
+    history: List[Bid] = field(default_factory=list)
+
+    def to_json(self) -> Dict[str, Any]:
+        return {
+            "turn": self.turn,
+            "active": list(self.active),
+            "passed": list(self.passed),
+            "current": self.current.to_json() if self.current else None,
+            "history": [b.to_json() for b in self.history],
+        }
+
+    @staticmethod
+    def from_json(data: Dict[str, Any]) -> "Auction":
+        return Auction(
+            turn=int(data.get("turn", 0)),
+            active=[int(s) for s in data.get("active", [])],
+            passed=[int(s) for s in data.get("passed", [])],
+            current=(
+                Bid.from_json(data["current"]) if data.get("current") else None
+            ),
+            history=[Bid.from_json(b) for b in data.get("history", [])],
+        )
+
+
+@dataclass
+class ChiamataState:
+    phase: str = PHASE_LOBBY
+    players: List[ChiamataPlayer] = field(default_factory=list)
+    dealer: int = 0
+    # 1-based deal counter; grows with patta replays.
+    hand_number: int = 1
+    # 0 = the calling side (caller plus partner, when there is one),
+    # 1 = the defenders. Only set once the match is finished.
+    winner: Optional[int] = None
+    scores: List[int] = field(default_factory=lambda: [0, 0])
+    # The calling auction of the current deal.
+    auction: Optional[Auction] = None
+    # Seat that won the auction (public from then on).
+    caller: Optional[int] = None
+    # The card named by the caller; its suit is the trump.
+    called_card: Optional[Card] = None
+    briscola_suit: str = ""
+    # Points target from the auction (61 unless raised).
+    declared_target: int = DEFAULT_TARGET
+    # True when the caller named a card of their own hand: no partner.
+    solo: bool = False
+    # True once the called card has been played; roles become public.
+    called_played: bool = False
+    # The partner's seat, recorded when the called card is played; stays
+    # ``None`` for a solo call.
+    partner_seat: Optional[int] = None
+    # Cards of the trick in progress, in play order.
+    trick: List[TrickCard] = field(default_factory=list)
+    trick_leader: int = 0
+    last_trick: Optional[Trick] = None
+    # Seat currently to act (auction bidder, caller, or player on turn).
+    turn: int = 0
+    # Per-deal audit trail, patta entries included.
+    hand_scores: List[Dict[str, Any]] = field(default_factory=list)
+    # While phase == "auction"/"playing": when the server acts for the
+    # player on turn.
+    turn_deadline: Optional[str] = None
+    auction_deadline: Optional[str] = None
+    # While phase == "calling": when the server names a card for the
+    # auction winner.
+    call_deadline: Optional[str] = None
+    # Seconds a player has to act before the server acts for them.
+    turn_timeout: int = DEFAULT_TURN_TIMEOUT_SECONDS
+
+    # -- serialization ----------------------------------------------------
+
+    def to_json(self) -> Dict[str, Any]:
+        return {
+            "phase": self.phase,
+            "players": [p.to_json() for p in self.players],
+            "dealer": self.dealer,
+            "hand_number": self.hand_number,
+            "winner": self.winner,
+            "scores": list(self.scores),
+            "auction": self.auction.to_json() if self.auction else None,
+            "caller": self.caller,
+            "called_card": (
+                self.called_card.to_json() if self.called_card else None
+            ),
+            "briscola_suit": self.briscola_suit,
+            "declared_target": self.declared_target,
+            "solo": self.solo,
+            "called_played": self.called_played,
+            "partner_seat": self.partner_seat,
+            "trick": [t.to_json() for t in self.trick],
+            "trick_leader": self.trick_leader,
+            "last_trick": self.last_trick.to_json() if self.last_trick else None,
+            "turn": self.turn,
+            "hand_scores": list(self.hand_scores),
+            "turn_deadline": self.turn_deadline,
+            "auction_deadline": self.auction_deadline,
+            "call_deadline": self.call_deadline,
+            "turn_timeout": self.turn_timeout,
+        }
+
+    @staticmethod
+    def from_json(data: Dict[str, Any]) -> "ChiamataState":
+        return ChiamataState(
+            phase=str(data.get("phase", PHASE_LOBBY)),
+            players=[
+                ChiamataPlayer.from_json(p) for p in data.get("players", [])
+            ],
+            dealer=int(data.get("dealer", 0)),
+            hand_number=int(data.get("hand_number", 1)),
+            winner=data.get("winner"),
+            scores=[int(x) for x in data.get("scores", [0, 0])],
+            auction=(
+                Auction.from_json(data["auction"]) if data.get("auction") else None
+            ),
+            caller=data.get("caller"),
+            called_card=(
+                Card.from_json(data["called_card"])
+                if data.get("called_card")
+                else None
+            ),
+            briscola_suit=str(data.get("briscola_suit", "")),
+            declared_target=int(data.get("declared_target", DEFAULT_TARGET)),
+            solo=bool(data.get("solo", False)),
+            called_played=bool(data.get("called_played", False)),
+            partner_seat=data.get("partner_seat"),
+            trick=[TrickCard.from_json(t) for t in data.get("trick", [])],
+            trick_leader=int(data.get("trick_leader", 0)),
+            last_trick=(
+                Trick.from_json(data["last_trick"]) if data.get("last_trick") else None
+            ),
+            turn=int(data.get("turn", 0)),
+            hand_scores=list(data.get("hand_scores", [])),
+            turn_deadline=data.get("turn_deadline"),
+            auction_deadline=data.get("auction_deadline"),
+            call_deadline=data.get("call_deadline"),
+            turn_timeout=int(
+                data.get("turn_timeout", DEFAULT_TURN_TIMEOUT_SECONDS)
+            ),
+        )
+
+    # -- helpers ----------------------------------------------------------
+
+    def player_for(self, sub: Optional[str]) -> Optional[ChiamataPlayer]:
+        for player in self.players:
+            if player.sub == sub:
+                return player
+        return None
+
+    def seated(self, sub: str) -> bool:
+        return self.player_for(sub) is not None
+
+
+# -- game setup --------------------------------------------------------------
+
+
+def create_game(
+    creator_sub: str,
+    creator_name: str,
+    turn_timeout: int = DEFAULT_TURN_TIMEOUT_SECONDS,
+) -> ChiamataState:
+    """Create a lobby game with the creator seated first."""
+    return ChiamataState(
+        phase=PHASE_LOBBY,
+        players=[ChiamataPlayer(sub=creator_sub, name=creator_name, seat=0)],
+        turn_timeout=turn_timeout,
+    )
+
+
+def join_game(state: ChiamataState, sub: str, name: str) -> None:
+    """Seat ``sub`` in the next free chair, starting the match when full."""
+    if state.phase != PHASE_LOBBY:
+        raise GameNotStarted("game has already started")
+    if state.seated(sub):
+        raise AlreadyJoined("already joined this game")
+    if len(state.players) >= PLAYER_COUNT:
+        raise LobbyFull("game is full")
+    seat = len(state.players)
+    state.players.append(ChiamataPlayer(sub=sub, name=name, seat=seat))
+    if len(state.players) == PLAYER_COUNT:
+        start_game(state)
+
+
+def start_game(state: ChiamataState) -> None:
+    """Deal the first hand and open the auction."""
+    if len(state.players) != PLAYER_COUNT:
+        raise GameNotStarted(f"need exactly {PLAYER_COUNT} players to start")
+    _deal(state)
+
+
+def _player_at(state: ChiamataState, seat: int) -> ChiamataPlayer:
+    for player in state.players:
+        if player.seat == seat:
+            return player
+    raise IllegalMove(f"no player in seat {seat}")
+
+
+def _set_deadline(seconds: int) -> str:
+    deadline = datetime.now(timezone.utc) + timedelta(seconds=seconds)
+    return deadline.isoformat()
+
+
+def _set_auction_deadline(state: ChiamataState) -> None:
+    state.auction_deadline = _set_deadline(state.turn_timeout)
+
+
+def _set_call_deadline(state: ChiamataState) -> None:
+    state.call_deadline = _set_deadline(state.turn_timeout)
+
+
+def _set_turn_deadline(state: ChiamataState) -> None:
+    state.turn_deadline = _set_deadline(state.turn_timeout)
+
+
+def _deal(state: ChiamataState) -> None:
+    """Deal 8 cards each and open the auction."""
+    deck = shuffled_deck()
+    for player in state.players:
+        player.hand = []
+        player.captured = []
+    state.trick = []
+    state.last_trick = None
+    state.turn_deadline = None
+    state.call_deadline = None
+    state.called_card = None
+    state.briscola_suit = ""
+    state.declared_target = DEFAULT_TARGET
+    state.solo = False
+    state.called_played = False
+    state.partner_seat = None
+    state.caller = None
+    state.winner = None
+    state.scores = [0, 0]
+    # The whole deck is dealt, one card at a time, starting with the
+    # player after the dealer.
+    for _ in range(HAND_SIZE):
+        for offset in range(PLAYER_COUNT):
+            _player_at(
+                state, (state.dealer + 1 + offset) % PLAYER_COUNT
+            ).hand.append(deck.pop())
+    first = (state.dealer + 1) % PLAYER_COUNT
+    state.turn = first
+    state.trick_leader = first
+    state.auction = Auction(
+        turn=first,
+        active=[player.seat for player in state.players],
+    )
+    state.phase = PHASE_AUCTION
+    _set_auction_deadline(state)
+    log.debug(
+        "deal %d dealt (dealer seat %d), auction opens with seat %d",
+        state.hand_number,
+        state.dealer,
+        first,
+    )
+
+
+# -- auction -----------------------------------------------------------------
+
+
+def _require_auction(
+    state: ChiamataState, sub: str
+) -> Tuple[Auction, ChiamataPlayer]:
+    if state.phase == PHASE_FINISHED:
+        raise GameFinished("the match is over")
+    if state.phase != PHASE_AUCTION:
+        raise GameNotStarted("the auction is not open")
+    player = state.player_for(sub)
+    if player is None:
+        raise NotYourTurn("you are not seated in this game")
+    auction = state.auction
+    if auction is None:  # pragma: no cover - auction always exists here
+        raise GameNotStarted("the auction is not open")
+    if auction.turn != player.seat:
+        raise NotYourTurn("it is not your turn to bid")
+    return auction, player
+
+
+def legal_bid_ranks(state: ChiamataState) -> List[int]:
+    """The ranks the player on turn may bid, empty at the point stage."""
+    auction = state.auction
+    if state.phase != PHASE_AUCTION or auction is None:
+        return []
+    current = auction.current
+    if current is None:
+        return list(BID_LADDER)
+    if current.rank == 2:
+        return []
+    index = _BID_INDEX[current.rank]
+    return [rank for rank in BID_LADDER if _BID_INDEX[rank] > index]
+
+
+def legal_bid_points(state: ChiamataState) -> Optional[int]:
+    """The lowest legal points raise, ``None`` when there is none.
+
+    Points may only be raised once the standing bid is the 2; any value
+    higher than the standing bid (up to :data:`MAX_TARGET`) is accepted.
+    """
+    auction = state.auction
+    if state.phase != PHASE_AUCTION or auction is None:
+        return None
+    current = auction.current
+    if current is None or current.rank != 2:
+        return None
+    if current.points >= MAX_TARGET:
+        return None
+    return current.points + 2
+
+
+def _finish_auction(state: ChiamataState) -> None:
+    """The last active bidder wins and must name the called card."""
+    auction = state.auction
+    if auction is None:  # pragma: no cover - guarded by callers
+        raise GameNotStarted("the auction is not open")
+    if len(auction.active) != 1 or auction.current is None:  # pragma: no cover
+        raise IllegalMove("the auction cannot be concluded yet")
+    winner = auction.active[0]
+    state.caller = winner
+    state.declared_target = auction.current.points
+    state.turn = winner
+    state.phase = PHASE_CALLING
+    state.auction_deadline = None
+    _set_call_deadline(state)
+    log.debug(
+        "deal %d: seat %d wins the auction (rank %d, target %d)",
+        state.hand_number,
+        winner,
+        auction.current.rank,
+        auction.current.points,
+    )
+
+
+def _advance_auction(state: ChiamataState) -> None:
+    auction = state.auction
+    if auction is None:  # pragma: no cover - guarded by callers
+        return
+    for offset in range(1, PLAYER_COUNT + 1):
+        seat = (auction.turn + offset) % PLAYER_COUNT
+        if seat in auction.active:
+            auction.turn = seat
+            break
+    state.turn = auction.turn
+    _set_auction_deadline(state)
+
+
+def _apply_bid(state: ChiamataState, bid: Bid) -> None:
+    auction = state.auction
+    if auction is None:  # pragma: no cover - guarded by callers
+        raise GameNotStarted("the auction is not open")
+    auction.current = bid
+    auction.history.append(bid)
+    log.debug(
+        "deal %d: seat %d bids rank %d at %d",
+        state.hand_number,
+        bid.seat,
+        bid.rank,
+        bid.points,
+    )
+    if len(auction.active) == 1:
+        _finish_auction(state)
+        return
+    _advance_auction(state)
+
+
+def bid_rank(state: ChiamataState, sub: str, rank: int) -> None:
+    """Bid ``rank``; it must be weaker than the standing bid."""
+    auction, player = _require_auction(state, sub)
+    if rank not in _BID_INDEX:
+        raise IllegalMove(f"invalid rank: {rank!r}")
+    current = auction.current
+    if current is not None:
+        if current.rank == 2:
+            raise IllegalMove("the auction is at the 2: raise the points or pass")
+        if _BID_INDEX[rank] <= _BID_INDEX[current.rank]:
+            raise IllegalMove("a bid must call a lower rank than the standing bid")
+    _apply_bid(state, Bid(seat=player.seat, rank=rank, points=DEFAULT_TARGET))
+
+
+def bid_points(state: ChiamataState, sub: str, points: int) -> None:
+    """Raise the points target; only legal once the standing bid is the 2."""
+    auction, player = _require_auction(state, sub)
+    current = auction.current
+    if current is None or current.rank != 2:
+        raise IllegalMove("points can only be raised after a bid of the 2")
+    if points <= current.points:
+        raise IllegalMove(
+            f"the points must be higher than the standing bid ({current.points})"
+        )
+    if points > MAX_TARGET:
+        raise IllegalMove(f"the points must be at most {MAX_TARGET}")
+    _apply_bid(state, Bid(seat=player.seat, rank=2, points=points))
+
+
+def pass_auction(state: ChiamataState, sub: str) -> None:
+    """Leave the auction for good."""
+    auction, player = _require_auction(state, sub)
+    if player.seat not in auction.active:  # pragma: no cover - turn implies active
+        raise IllegalMove("you already passed")
+    if len(auction.active) == 1 and auction.current is None:
+        # Everyone else passed before any bid: the last player must bid.
+        raise IllegalMove("you must bid: everyone else has passed")
+    auction.active.remove(player.seat)
+    auction.passed.append(player.seat)
+    log.debug("deal %d: seat %d passes", state.hand_number, player.seat)
+    if len(auction.active) == 1 and auction.current is not None:
+        _finish_auction(state)
+        return
+    _advance_auction(state)
+
+
+# -- calling -------------------------------------------------------------------
+
+
+def call(state: ChiamataState, sub: str, card_code: str) -> None:
+    """The auction winner names the called card (any suit of the bid rank).
+
+    If the caller holds the named card they play alone; the card's suit
+    becomes the trump for the deal.
+    """
+    if state.phase == PHASE_FINISHED:
+        raise GameFinished("the match is over")
+    if state.phase != PHASE_CALLING:
+        raise GameNotStarted("no call is waiting")
+    caller = None if state.caller is None else _player_at(state, state.caller)
+    player = state.player_for(sub)
+    if player is None or caller is None or player.seat != caller.seat:
+        raise NotYourTurn("only the auction winner calls the card")
+    auction = state.auction
+    if auction is None or auction.current is None:  # pragma: no cover
+        raise GameNotStarted("no call is waiting")
+    card = parse_card(card_code)
+    if card.rank != auction.current.rank:
+        raise IllegalMove(
+            "the called card must match the rank won in the auction"
+        )
+    state.called_card = card
+    state.briscola_suit = card.suit
+    state.solo = card in caller.hand
+    state.phase = PHASE_PLAYING
+    # The player after the dealer opens the play, whichever seat won the
+    # auction.
+    first = (state.dealer + 1) % PLAYER_COUNT
+    state.turn = first
+    state.trick_leader = first
+    state.call_deadline = None
+    _set_turn_deadline(state)
+    log.debug(
+        "deal %d: seat %d calls %s%s",
+        state.hand_number,
+        caller.seat,
+        card.code,
+        " (playing alone)" if state.solo else "",
+    )
+
+
+# -- play ----------------------------------------------------------------------
+
+
+def play(state: ChiamataState, sub: str, card_code: str) -> None:
+    """Apply one move by the player identified by ``sub``.
+
+    Any card in hand is a legal play; only turn order and phase are
+    validated. Raises a :class:`~tavolo.platform.errors.GameError`
+    subclass on any violation.
+    """
+    if state.phase == PHASE_FINISHED:
+        raise GameFinished("the match is over")
+    if state.phase == PHASE_AUCTION:
+        raise IllegalMove("the auction is still open")
+    if state.phase == PHASE_CALLING:
+        raise IllegalMove("the called card has not been named yet")
+    if state.phase != PHASE_PLAYING:
+        raise GameNotStarted("the game has not started yet")
+
+    player = state.player_for(sub)
+    if player is None or player.seat != state.turn:
+        raise NotYourTurn("it is not your turn")
+
+    card = parse_card(card_code)
+    if card not in player.hand:
+        raise CardNotInHand(f"card {card.code} is not in your hand")
+
+    player.hand.remove(card)
+    if state.called_card is not None and card == state.called_card:
+        state.called_played = True
+        state.partner_seat = (
+            None if player.seat == state.caller else player.seat
+        )
+        log.info(
+            "deal %d: the called card %s was played by seat %d (%s)",
+            state.hand_number,
+            card.code,
+            player.seat,
+            "the caller plays alone" if state.partner_seat is None else "partner revealed",
+        )
+    state.trick.append(TrickCard(seat=player.seat, card=card.code))
+    log.debug(
+        "deal %d: seat %d played %s (%d/%d in the trick)",
+        state.hand_number,
+        player.seat,
+        card.code,
+        len(state.trick),
+        PLAYER_COUNT,
+    )
+
+    if len(state.trick) == PLAYER_COUNT:
+        _resolve_trick(state)
+    else:
+        state.turn = (state.turn + 1) % PLAYER_COUNT
+        _set_turn_deadline(state)
+
+
+def _resolve_trick(state: ChiamataState) -> None:
+    """Score the completed trick, draw no cards (deck already exhausted)."""
+    winner = _trick_winner(state)
+    taken = [parse_card(t.card) for t in state.trick]
+    _player_at(state, winner).captured.extend(taken)
+    state.last_trick = Trick(winner=winner, cards=list(state.trick))
+    state.trick = []
+    state.trick_leader = winner
+    state.turn = winner
+    log.debug(
+        "deal %d: seat %d takes the trick with %s",
+        state.hand_number,
+        winner,
+        [t.card for t in state.last_trick.cards],
+    )
+
+    if all(not player.hand for player in state.players):
+        _end_deal(state)
+        return
+    _set_turn_deadline(state)
+
+
+def _trick_winner(state: ChiamataState) -> int:
+    """The seat winning the current (complete) trick."""
+    played = [(t.seat, parse_card(t.card)) for t in state.trick]
+    leader_suit = played[0][1].suit
+    trumps = [
+        (seat, card)
+        for seat, card in played
+        if card.suit == state.briscola_suit
+    ]
+    pool = trumps or [
+        (seat, card) for seat, card in played if card.suit == leader_suit
+    ]
+    return max(pool, key=lambda item: TRICK_STRENGTH[item[1].rank])[0]
+
+
+# -- scoring -------------------------------------------------------------------
+
+
+def side_points(state: ChiamataState) -> Tuple[int, int]:
+    """The points captured by the calling side and the defenders.
+
+    The partner's pile only joins the caller's once the partner is known
+    (the called card has been played); until then this is only used to
+    score a finished deal, where the reveal has always happened.
+    """
+    if state.caller is None:
+        return (0, 0)
+    caller_seats = {state.caller}
+    if state.partner_seat is not None:
+        caller_seats.add(state.partner_seat)
+    caller_points = 0
+    defender_points = 0
+    for player in state.players:
+        points = sum(card_points(card) for card in player.captured)
+        if player.seat in caller_seats:
+            caller_points += points
+        else:
+            defender_points += points
+    return (caller_points, defender_points)
+
+
+def _end_deal(state: ChiamataState) -> None:
+    """Score the deal: finish the match, or replay after a patta.
+
+    A 60-60 deal with the plain 61 target is a patta: its points do not
+    count, the dealer rotates and the deal is replayed (a new auction).
+    Otherwise the calling side wins by reaching the declared target.
+    """
+    state.turn_deadline = None
+    caller_points, defender_points = side_points(state)
+    patta = (
+        state.declared_target == DEFAULT_TARGET
+        and caller_points == 60
+        and defender_points == 60
+    )
+    caller_name = (
+        _player_at(state, state.caller).name if state.caller is not None else None
+    )
+    caller_seats = {state.caller}
+    if state.partner_seat is not None:
+        caller_seats.add(state.partner_seat)
+    caller_cards = sum(
+        len(player.captured)
+        for player in state.players
+        if player.seat in caller_seats
+    )
+    entry: Dict[str, Any] = {
+        "deal": state.hand_number,
+        "patta": patta,
+        "points": {"A": caller_points, "B": defender_points},
+        "cards": {"A": caller_cards, "B": 40 - caller_cards},
+        "declared_target": state.declared_target,
+        "called_card": (
+            state.called_card.code if state.called_card is not None else None
+        ),
+        "caller": caller_name,
+        "solo": state.solo,
+    }
+    state.hand_scores.append(entry)
+    log.debug(
+        "deal %d scored caller %d - defenders %d%s (target %d)",
+        state.hand_number,
+        caller_points,
+        defender_points,
+        " patta" if patta else "",
+        state.declared_target,
+    )
+    if patta:
+        state.hand_number += 1
+        state.dealer = (state.dealer + 1) % PLAYER_COUNT
+        _deal(state)
+        return
+
+    state.scores = [caller_points, defender_points]
+    state.winner = (
+        SIDE_CALLER if caller_points >= state.declared_target else SIDE_DEFENDERS
+    )
+    state.phase = PHASE_FINISHED
+    log.info(
+        "match ended, %s win %d-%d",
+        SIDE_NAMES[state.winner],
+        caller_points,
+        defender_points,
+    )
+
+
+# -- server-side auto actions ---------------------------------------------------
+
+
+def auto_bid(state: ChiamataState) -> None:
+    """Act for the bidder on turn: always pass, unless forced to bid.
+
+    An absent player never outbids anyone: they leave the auction. Only
+    the last player standing before any bid cannot pass — they are made
+    to bid the ace, whose suit :func:`auto_call` picks at random if the
+    call itself times out too.
+    """
+    if state.phase != PHASE_AUCTION:
+        raise GameNotStarted("the auction is not open")
+    auction = state.auction
+    if auction is None:  # pragma: no cover - guarded by phase
+        raise GameNotStarted("the auction is not open")
+    player = _player_at(state, auction.turn)
+    if len(auction.active) == 1 and auction.current is None:
+        bid_rank(state, player.sub, 1)
+        return
+    pass_auction(state, player.sub)
+
+
+def auto_call(state: ChiamataState, rng: Optional[random.Random] = None) -> None:
+    """Name a random suit of the auction rank for the winner."""
+    if state.phase != PHASE_CALLING:
+        raise GameNotStarted("no call is waiting")
+    auction = state.auction
+    if auction is None or auction.current is None:  # pragma: no cover
+        raise GameNotStarted("no call is waiting")
+    caller = _player_at(state, state.caller) if state.caller is not None else None
+    if caller is None:  # pragma: no cover - guarded by phase
+        raise GameNotStarted("no call is waiting")
+    chooser = rng or _rng
+    card = Card(rank=auction.current.rank, suit=chooser.choice(SUITS))
+    call(state, caller.sub, card.code)
+
+
+def auto_play(state: ChiamataState, rng: Optional[random.Random] = None) -> None:
+    """Play a random card for the player currently on turn."""
+    if state.phase != PHASE_PLAYING:
+        raise GameNotStarted("the game has not started yet")
+    player = _player_at(state, state.turn)
+    if not player.hand:
+        raise IllegalMove("the player on turn has no cards")
+    chooser = rng or _rng
+    card = chooser.choice(player.hand)
+    play(state, player.sub, card.code)
+
+
+# -- views ---------------------------------------------------------------------
+
+
+def _roles_public(state: ChiamataState) -> bool:
+    return state.called_played
+
+
+def state_for_player(
+    state: ChiamataState, sub: Optional[str]
+) -> Dict[str, object]:
+    """Serialize ``state`` hiding other players' hands and secret roles.
+
+    Hands are reduced to a count, except for the requesting player's own
+    hand. The partner's role only appears once the called card has been
+    played; before that only the caller is labeled. The calling side's
+    running total is withheld until then too: it would let onlookers
+    deduce the partner's identity from who captured the points.
+    """
+    viewer = state.player_for(sub)
+    revealed = _roles_public(state)
+    players: List[Dict[str, object]] = []
+    for player in state.players:
+        role = ""
+        if state.caller is not None and player.seat == state.caller:
+            role = ROLE_CALLER
+        if revealed:
+            if state.partner_seat is not None and player.seat == state.partner_seat:
+                role = ROLE_PARTNER
+            elif player.seat != state.caller:
+                role = ROLE_DEFENDER
+        view: Dict[str, object] = {
+            "sub": player.sub,
+            "name": player.name,
+            "seat": player.seat,
+            "team": role,
+            "cards_left": len(player.hand),
+            "captured_count": len(player.captured),
+            "points": sum(card_points(card) for card in player.captured),
+        }
+        if viewer is not None and viewer.seat == player.seat:
+            view["hand"] = [c.code for c in player.hand]
+        players.append(view)
+
+    auction = state.auction
+    auction_view: Optional[Dict[str, object]] = None
+    if auction is not None:
+        auction_view = {
+            "turn": auction.turn,
+            "active": list(auction.active),
+            "passed": list(auction.passed),
+            "current": auction.current.to_json() if auction.current else None,
+            "history": [b.to_json() for b in auction.history],
+        }
+
+    payload: Dict[str, object] = {
+        "phase": state.phase,
+        "player_count": PLAYER_COUNT,
+        "dealer": state.dealer,
+        "hand_number": state.hand_number,
+        "turn": state.turn,
+        "auction": auction_view,
+        "caller": state.caller,
+        "called_card": (
+            state.called_card.code if state.called_card is not None else None
+        ),
+        "briscola_suit": state.briscola_suit,
+        "declared_target": state.declared_target,
+        "called_played": state.called_played,
+        "solo": state.solo if revealed else False,
+        "partner": (
+            state.partner_seat if revealed and state.partner_seat is not None else None
+        ),
+        "players": players,
+        "trick": [t.to_json() for t in state.trick],
+        "trick_leader": state.trick_leader,
+        "last_trick": state.last_trick.to_json() if state.last_trick else None,
+        "last_deal": state.hand_scores[-1] if state.hand_scores else None,
+        "auction_deadline": state.auction_deadline,
+        "call_deadline": state.call_deadline,
+        "turn_deadline": state.turn_deadline,
+        "winner": (
+            None if state.winner is None else SIDE_NAMES[state.winner]
+        ),
+    }
+    if revealed and state.caller is not None:
+        caller_points, defender_points = side_points(state)
+        payload["scores"] = {"A": caller_points, "B": defender_points}
+
+    if viewer is not None:
+        if state.phase == PHASE_AUCTION and auction is not None:
+            if auction.turn == viewer.seat:
+                payload["your_turn"] = True
+                payload["legal_bids"] = {
+                    "ranks": legal_bid_ranks(state),
+                    "points_min": legal_bid_points(state),
+                    "points_max": MAX_TARGET,
+                }
+        elif state.phase == PHASE_CALLING and state.caller == viewer.seat:
+            payload["your_turn"] = True
+            current = auction.current if auction is not None else None
+            if current is not None:
+                payload["callable_cards"] = [
+                    Card(rank=current.rank, suit=suit).code for suit in SUITS
+                ]
+        elif state.phase == PHASE_PLAYING and state.turn == viewer.seat:
+            payload["your_turn"] = True
+    return payload

server/packages/tavolo-briscola/src/tavolo/briscola/plugin.py

@@ -1,9 +1,11 @@
 """The platform-facing adapter for briscola.
 
-Two :class:`~tavolo.platform.engine.GameEngine` implementations share one
-rules core (:mod:`tavolo.briscola.engine`): classic two-player
-:class:`BriscolaEngine` and four-player fixed-partnership
-:class:`BriscolaQuattroEngine`. They translate platform calls (create,
+Three :class:`~tavolo.platform.engine.GameEngine` implementations share
+one rules core (:mod:`tavolo.briscola.engine`, with the five-player
+variant in :mod:`tavolo.briscola.chiamata`): classic two-player
+:class:`BriscolaEngine`, four-player fixed-partnership
+:class:`BriscolaQuattroEngine` and five-player
+:class:`BriscolaChiamataEngine`. They translate platform calls (create,
 join, websocket actions, deadlines) into rules-engine calls and back,
 keeping all briscola knowledge inside this package. Nothing outside
 ``tavolo.briscola`` needs to know about phases, tricks or deal scoring.
@@ -24,7 +26,18 @@ from tavolo.platform.engine import (
 )
 from tavolo.platform.errors import GameError, IllegalMove
 
-from . import engine
+from . import chiamata, engine
+from .chiamata import (
+    PHASE_AUCTION,
+    PHASE_CALLING,
+    ROLE_CALLER,
+    ROLE_DEFENDER,
+    ROLE_PARTNER,
+    SIDE_NAMES,
+    ChiamataPlayer,
+    ChiamataState,
+)
+from .engine import card_points
 from .state import (
     DEFAULT_HAND_ACK_TIMEOUT_SECONDS,
     DEFAULT_TARGET_SCORE,
@@ -277,3 +290,299 @@ class BriscolaQuattroEngine(_BriscolaBase):
     min_players = 4
     max_players = 4
     player_count = 4
+
+
+def _chiamata_player(state: ChiamataState, seat: int) -> ChiamataPlayer:
+    for player in state.players:
+        if player.seat == seat:
+            return player
+    raise GameError(f"no player in seat {seat}")
+
+
+class BriscolaChiamataEngine(GameEngine):
+    """Five-player briscola chiamata as a platform game engine.
+
+    One deal per match: the five players auction the call, the winner
+    names a card (playing alone when it is in their own hand) and the
+    calling side must reach the declared target (61 unless the auction
+    raised it). A 60-60 deal with the plain target is a patta and is
+    replayed. This keeps the match result a clean two-sided affair —
+    caller and secret partner against the other three, or the lone
+    caller against the other four — which the platform can rate,
+    persist and display like any other game.
+    """
+
+    id = "briscola_chiamata"
+    name = "Briscola chiamata"
+    description = (
+        "Five-player briscola with a descending auction: the winner calls "
+        "a card, whose holder becomes the secret partner (or, when the "
+        "caller holds it, the caller plays alone) and whose suit becomes "
+        "the trump. The calling side must reach 61 points; one deal per "
+        "match, replayed after a patta."
+    )
+    min_players = 5
+    max_players = 5
+
+    options_schema: Mapping[str, Any] = {}
+
+    def __init__(
+        self,
+        turn_timeout_seconds: int = DEFAULT_TURN_TIMEOUT_SECONDS,
+        hand_ack_timeout_seconds: int = DEFAULT_HAND_ACK_TIMEOUT_SECONDS,
+    ) -> None:
+        self._turn_timeout = turn_timeout_seconds
+        # A chiamata match is a single deal, so there is no between-deals
+        # acknowledgement phase to time out; the parameter is accepted
+        # for symmetry with the other briscola engines and wired by the
+        # application root.
+        self._hand_ack_timeout = hand_ack_timeout_seconds
+
+    # -- lobby ------------------------------------------------------------
+
+    def create(self, session: GameSession, options: Mapping[str, Any]) -> None:
+        creator = session.players[0]
+        session.state = chiamata.create_game(
+            creator_sub=creator.user_sub,
+            creator_name=creator.display_name,
+            turn_timeout=self._turn_timeout,
+        )
+
+    def join(self, session: GameSession, user_sub: str, display_name: str) -> None:
+        chiamata.join_game(session.state, user_sub, display_name)
+        session.players.append(
+            Seat(user_sub=user_sub, display_name=display_name)
+        )
+
+    def in_lobby(self, session: GameSession) -> bool:
+        return session.state.phase == PHASE_LOBBY
+
+    def lobby_view(self, session: GameSession) -> Dict[str, Any]:
+        state: ChiamataState = session.state
+        return {
+            "phase": state.phase,
+            "declared_target": state.declared_target,
+        }
+
+    # -- play -------------------------------------------------------------
+
+    def handle_action(
+        self, session: GameSession, user_sub: str, action: str, payload: Mapping[str, Any]
+    ) -> None:
+        state: ChiamataState = session.state
+        if action == "bid":
+            rank = payload.get("rank")
+            points = payload.get("points")
+            if rank is not None:
+                if isinstance(rank, bool) or not isinstance(rank, int):
+                    raise IllegalMove("'rank' must be an integer")
+                chiamata.bid_rank(state, user_sub, rank)
+            elif points is not None:
+                if isinstance(points, bool) or not isinstance(points, int):
+                    raise IllegalMove("'points' must be an integer")
+                chiamata.bid_points(state, user_sub, points)
+            else:
+                raise IllegalMove("a bid needs a 'rank' or a 'points' value")
+        elif action == "pass":
+            chiamata.pass_auction(state, user_sub)
+        elif action == "call":
+            card = payload.get("card")
+            if not isinstance(card, str):
+                raise IllegalMove("'card' must be a card code string")
+            try:
+                chiamata.call(state, user_sub, card)
+            except ValueError:
+                raise IllegalMove("invalid card code")
+        elif action == "play":
+            card = payload.get("card")
+            if not isinstance(card, str):
+                raise IllegalMove("'card' must be a card code string")
+            try:
+                chiamata.play(state, user_sub, card)
+            except ValueError:
+                raise IllegalMove("invalid card code")
+        else:
+            raise IllegalMove(f"unknown action: {action!r}")
+
+    def view_for(self, session: GameSession, user_sub: Optional[str]) -> Dict[str, Any]:
+        return chiamata.state_for_player(session.state, user_sub)
+
+    def is_finished(self, session: GameSession) -> bool:
+        return session.state.phase == PHASE_FINISHED
+
+    def game_over_view(self, session: GameSession, user_sub: Optional[str]) -> Dict[str, Any]:
+        state: ChiamataState = session.state
+        caller = (
+            _chiamata_player(state, state.caller) if state.caller is not None else None
+        )
+        partner = (
+            _chiamata_player(state, state.partner_seat)
+            if state.partner_seat is not None
+            else None
+        )
+        return {
+            "scores": {"A": state.scores[0], "B": state.scores[1]},
+            "winner": (
+                None if state.winner is None else SIDE_NAMES[state.winner]
+            ),
+            "declared_target": state.declared_target,
+            "called_card": (
+                state.called_card.code if state.called_card is not None else None
+            ),
+            "caller": None if caller is None else caller.name,
+            "partner": None if partner is None else partner.name,
+            "solo": state.solo,
+        }
+
+    # -- (de)serialization -------------------------------------------------
+
+    def state_to_json(self, state: Any) -> Dict[str, Any]:
+        assert isinstance(state, ChiamataState)
+        return state.to_json()
+
+    def state_from_json(self, data: Mapping[str, Any]) -> Any:
+        return ChiamataState.from_json(dict(data))
+
+    # -- deadlines ----------------------------------------------------------
+
+    def next_deadline(self, session: GameSession) -> Optional[Deadline]:
+        state: ChiamataState = session.state
+        if state.phase == PHASE_AUCTION and state.auction_deadline:
+            due_ms = _deadline_ms(state.auction_deadline)
+            if due_ms is None:
+                return None
+            return Deadline(
+                kind="auction",
+                due_at=datetime.fromtimestamp(due_ms / 1000, tz=timezone.utc),
+                token=f"auction:{state.hand_number}:{state.turn}:{due_ms}",
+            )
+        if state.phase == PHASE_CALLING and state.call_deadline:
+            due_ms = _deadline_ms(state.call_deadline)
+            if due_ms is None:
+                return None
+            return Deadline(
+                kind="call",
+                due_at=datetime.fromtimestamp(due_ms / 1000, tz=timezone.utc),
+                token=f"call:{state.hand_number}:{due_ms}",
+            )
+        if state.phase == PHASE_PLAYING and state.turn_deadline:
+            due_ms = _deadline_ms(state.turn_deadline)
+            if due_ms is None:
+                return None
+            return Deadline(
+                kind="turn",
+                due_at=datetime.fromtimestamp(due_ms / 1000, tz=timezone.utc),
+                token=f"turn:{state.hand_number}:{state.turn}:{due_ms}",
+            )
+        return None
+
+    def fire_deadline(self, session: GameSession, kind: str, token: str) -> None:
+        current = self.next_deadline(session)
+        if current is None or current.kind != kind or current.token != token:
+            # Overtaken by events (a bid, call or play landed in time):
+            # nothing to do.
+            raise GameError("stale deadline")
+        state: ChiamataState = session.state
+        if kind == "auction":
+            seat = state.turn
+            auction = state.auction
+            passed_before = len(auction.passed) if auction is not None else 0
+            chiamata.auto_bid(state)
+            action = (
+                "auto-passed"
+                if auction is not None and len(auction.passed) > passed_before
+                else "forced to bid the ace"
+            )
+            log.info(
+                "seat %s %s (auction timeout, deal %d)",
+                seat,
+                action,
+                state.hand_number,
+            )
+        elif kind == "call":
+            caller = state.caller
+            chiamata.auto_call(state)
+            log.info(
+                "auto-called for seat %s (call timeout, deal %d)",
+                caller,
+                state.hand_number,
+            )
+        elif kind == "turn":
+            seat = state.turn
+            chiamata.auto_play(state)
+            log.info(
+                "auto-played for seat %s (turn timeout, deal %d)",
+                seat,
+                state.hand_number,
+            )
+        else:  # pragma: no cover - next_deadline never emits other kinds
+            raise GameError(f"unknown deadline kind: {kind!r}")
+
+    # -- results -------------------------------------------------------------
+
+    def result(self, session: GameSession) -> MatchResult:
+        state: ChiamataState = session.state
+        if state.winner is None:
+            raise GameError("no result: the match is not finished")
+        if state.caller is None:  # pragma: no cover - a winner implies a caller
+            raise GameError("no result: the caller is unknown")
+        caller = state.caller
+        partner = state.partner_seat
+        caller_seats = [caller] + ([partner] if partner is not None else [])
+        teams = [
+            [_chiamata_player(state, seat).sub for seat in caller_seats],
+            [
+                player.sub
+                for player in state.players
+                if player.seat not in caller_seats
+            ],
+        ]
+        caller_points, defender_points = chiamata.side_points(state)
+        side_scores = [caller_points, defender_points]
+        players = []
+        for player in state.players:
+            if player.seat == caller:
+                role = ROLE_CALLER
+                side = 0
+            elif partner is not None and player.seat == partner:
+                role = ROLE_PARTNER
+                side = 0
+            else:
+                role = ROLE_DEFENDER
+                side = 1
+            players.append(
+                PlayerResult(
+                    user_sub=player.sub,
+                    seat=player.seat,
+                    won=side == state.winner,
+                    team=role,
+                    score=float(side_scores[side]),
+                    details={
+                        "points": sum(card_points(card) for card in player.captured),
+                        "captured_cards": len(player.captured),
+                    },
+                )
+            )
+        return MatchResult(
+            teams=teams,
+            winner_team=state.winner,
+            players=players,
+            summary={
+                "team_a_score": caller_points,
+                "team_b_score": defender_points,
+                "winner_team": SIDE_NAMES[state.winner],
+                "declared_target": state.declared_target,
+                "called_card": (
+                    state.called_card.code if state.called_card is not None else None
+                ),
+                "caller": _chiamata_player(state, caller).name,
+                "partner": (
+                    _chiamata_player(state, partner).name
+                    if partner is not None
+                    else None
+                ),
+                "solo": state.solo,
+                "deals_played": state.hand_number,
+                "deal_scores": state.hand_scores,
+            },
+        )

server/packages/tavolo-briscola/tests/test_chiamata.py

@@ -0,0 +1,667 @@
+"""Rules tests for briscola chiamata: auction, call, play, scoring, patta."""
+from __future__ import annotations
+
+import random
+import unittest
+
+from tavolo.briscola import chiamata as rules
+from tavolo.briscola.chiamata import (
+    BID_LADDER,
+    Bid,
+    ChiamataPlayer,
+    ChiamataState,
+    PHASE_AUCTION,
+    PHASE_CALLING,
+    PHASE_FINISHED,
+    PHASE_PLAYING,
+    ROLE_CALLER,
+    ROLE_DEFENDER,
+    ROLE_PARTNER,
+    SIDE_CALLER,
+    SIDE_DEFENDERS,
+)
+from tavolo.briscola.errors import (
+    CardNotInHand,
+    GameFinished,
+    GameNotStarted,
+    IllegalMove,
+    NotYourTurn,
+)
+from tavolo.briscola.state import Card
+
+
+def card(code: str) -> Card:
+    return Card.parse(code)
+
+
+def started_state() -> ChiamataState:
+    """A five-player game whose auction has just opened (dealer seat 0)."""
+    state = rules.create_game("p0", "p0")
+    for i in range(1, 5):
+        rules.join_game(state, f"p{i}", f"p{i}")
+    return state
+
+
+def bid(state: ChiamataState, seat: int, rank: int) -> None:
+    rules.bid_rank(state, f"p{seat}", rank)
+
+
+def make_state(
+    hands,
+    *,
+    briscola_suit: str = "S",
+    called_card: str | None = None,
+    caller: int | None = None,
+    solo: bool = False,
+    called_played: bool = False,
+    partner_seat: int | None = None,
+    captured=None,
+    turn: int = 0,
+    dealer: int = 0,
+    declared_target: int = rules.DEFAULT_TARGET,
+    phase: str = PHASE_PLAYING,
+    hand_number: int = 1,
+) -> ChiamataState:
+    """Build a controlled playing state directly (bypassing the auction)."""
+    state = ChiamataState(
+        phase=phase,
+        dealer=dealer,
+        hand_number=hand_number,
+        declared_target=declared_target,
+        briscola_suit=briscola_suit,
+        called_card=card(called_card) if called_card else None,
+        caller=caller,
+        solo=solo,
+        called_played=called_played,
+        partner_seat=partner_seat,
+        turn=turn,
+    )
+    for seat, hand in enumerate(hands):
+        state.players.append(
+            ChiamataPlayer(
+                sub=f"p{seat}", name=f"p{seat}", seat=seat,
+                hand=[card(c) for c in hand],
+            )
+        )
+    if captured is not None:
+        for player, codes in zip(state.players, captured):
+            player.captured = [card(c) for c in codes]
+    return state
+
+
+def play_all(state: ChiamataState) -> None:
+    """Play the first card of each hand in turn order until the trick resolves."""
+    for _ in range(rules.PLAYER_COUNT):
+        player = next(p for p in state.players if p.seat == state.turn)
+        rules.play(state, player.sub, player.hand[0].code)
+
+
+class SetupTest(unittest.TestCase):
+    def test_five_player_deal(self) -> None:
+        state = started_state()
+        self.assertEqual(PHASE_AUCTION, state.phase)
+        self.assertEqual(rules.PLAYER_COUNT, len(state.players))
+        for player in state.players:
+            self.assertEqual(rules.HAND_SIZE, len(player.hand))
+        # The whole deck is dealt: no stock, no face-up card.
+        dealt = [c.code for p in state.players for c in p.hand]
+        self.assertEqual(40, len(dealt))
+        self.assertEqual(40, len(set(dealt)))
+        # The auction opens with the player after the dealer.
+        assert state.auction is not None
+        self.assertEqual(1, state.auction.turn)
+        self.assertEqual([0, 1, 2, 3, 4], state.auction.active)
+        self.assertIsNone(state.auction.current)
+
+    def test_join_errors(self) -> None:
+        from tavolo.platform.errors import AlreadyJoined, GameNotStarted, LobbyFull
+
+        state = rules.create_game("p0", "p0")
+        with self.assertRaises(AlreadyJoined):
+            rules.join_game(state, "p0", "p0")
+        for i in range(1, 5):
+            rules.join_game(state, f"p{i}", f"p{i}")
+        self.assertEqual(PHASE_AUCTION, state.phase)
+        with self.assertRaises(GameNotStarted):
+            rules.join_game(state, "p5", "p5")
+
+        lobby = rules.create_game("p0", "p0")
+        for i in range(1, 5):
+            rules.join_game(lobby, f"p{i}", f"p{i}")
+        # Joining a sixth player is impossible once the fifth started the
+        # match; exercise LobbyFull on an artificially unfilled start.
+        unfilled = rules.create_game("p0", "p0")
+        unfilled.phase = rules.PHASE_LOBBY
+        for i in range(1, 5):
+            unfilled.players.append(
+                ChiamataPlayer(sub=f"p{i}", name=f"p{i}", seat=i)
+            )
+        with self.assertRaises(LobbyFull):
+            rules.join_game(unfilled, "p5", "p5")
+
+
+class AuctionTest(unittest.TestCase):
+    def test_first_bid_accepts_any_rank(self) -> None:
+        state = started_state()
+        rules.bid_rank(state, "p1", 5)
+        assert state.auction is not None
+        self.assertEqual(Bid(seat=1, rank=5, points=61), state.auction.current)
+
+    def test_bids_must_descend(self) -> None:
+        state = started_state()
+        bid(state, 1, 1)  # ace
+        with self.assertRaises(IllegalMove):
+            bid(state, 2, 1)  # same rank
+        bid(state, 2, 3)  # three, weaker than the ace
+        bid(state, 3, 10)  # king, weaker than the three
+        with self.assertRaises(IllegalMove):
+            bid(state, 4, 3)  # three is stronger than the king
+        bid(state, 4, 9)  # horse
+
+    def test_bid_ladder_ordering(self) -> None:
+        # A bid must be weaker than the standing bid: descending strength
+        # follows A > 3 > K > H > J > 7 > 6 > 5 > 4 > 2.
+        state = started_state()
+        bid(state, 1, 10)  # king
+        for opponent, rank in ((2, 9), (3, 8), (4, 7), (0, 6)):
+            rules.bid_rank(state, f"p{opponent}", rank)
+        # 3 and A are stronger than 6: rejected.
+        with self.assertRaises(IllegalMove):
+            rules.bid_rank(state, "p1", 3)
+        with self.assertRaises(IllegalMove):
+            rules.bid_rank(state, "p1", 1)
+        rules.bid_rank(state, "p1", 5)
+
+    def test_not_your_turn(self) -> None:
+        state = started_state()
+        with self.assertRaises(NotYourTurn):
+            bid(state, 2, 1)
+
+    def test_pass_eliminates_and_last_standing_bids(self) -> None:
+        state = started_state()
+        for seat in (1, 2, 3, 4):
+            rules.pass_auction(state, f"p{seat}")
+        assert state.auction is not None
+        # Only seat 0 remains and nobody has bid: it must bid.
+        self.assertEqual([0], state.auction.active)
+        with self.assertRaises(IllegalMove):
+            rules.pass_auction(state, "p0")
+        rules.bid_rank(state, "p0", 2)
+        self.assertEqual(PHASE_CALLING, state.phase)
+        self.assertEqual(0, state.caller)
+        self.assertEqual(61, state.declared_target)
+
+    def test_auction_ends_when_one_bidder_remains(self) -> None:
+        state = started_state()
+        bid(state, 1, 1)  # ace
+        rules.pass_auction(state, "p2")
+        bid(state, 3, 10)  # king
+        rules.pass_auction(state, "p4")
+        rules.pass_auction(state, "p0")
+        rules.pass_auction(state, "p1")
+        self.assertEqual(PHASE_CALLING, state.phase)
+        self.assertEqual(3, state.caller)
+        self.assertEqual(61, state.declared_target)
+
+    def test_point_raises_only_after_the_two(self) -> None:
+        state = started_state()
+        bid(state, 1, 1)
+        with self.assertRaises(IllegalMove):
+            rules.bid_points(state, "p2", 62)
+        bid(state, 2, 2)
+        with self.assertRaises(IllegalMove):
+            rules.bid_rank(state, "p3", 2)  # no ranks below the 2
+        with self.assertRaises(IllegalMove):
+            rules.bid_points(state, "p3", 61)  # not higher
+        with self.assertRaises(IllegalMove):
+            rules.bid_points(state, "p3", 121)  # above the cap
+        rules.bid_points(state, "p3", 63)
+        assert state.auction is not None
+        self.assertEqual(Bid(seat=3, rank=2, points=63), state.auction.current)
+
+    def test_legal_bids_exposed_to_the_bidder_only(self) -> None:
+        state = started_state()
+        bid(state, 1, 10)  # king
+        view = rules.state_for_player(state, "p2")
+        self.assertTrue(view["your_turn"])
+        legal = view["legal_bids"]
+        self.assertEqual([9, 8, 7, 6, 5, 4, 2], legal["ranks"])
+        self.assertIsNone(legal["points_min"])
+        # A player who is not on turn gets no legal bids.
+        other = rules.state_for_player(state, "p3")
+        self.assertNotIn("legal_bids", other)
+        self.assertNotIn("your_turn", other)
+
+    def test_legal_points_exposed_at_the_two(self) -> None:
+        state = started_state()
+        bid(state, 1, 2)
+        view = rules.state_for_player(state, "p2")
+        self.assertEqual([], view["legal_bids"]["ranks"])
+        self.assertEqual(63, view["legal_bids"]["points_min"])
+        self.assertEqual(120, view["legal_bids"]["points_max"])
+
+    def test_auto_bid_always_passes_when_legal(self) -> None:
+        state = started_state()
+        assert state.auction is not None
+        rules.auto_bid(state)
+        # Seat 1 passes: nobody has bid and the turn moves on.
+        self.assertEqual([1], state.auction.passed)
+        self.assertIsNone(state.auction.current)
+        self.assertEqual(2, state.auction.turn)
+        # An absent bidder still passes when there is a standing bid.
+        rules.bid_rank(state, "p2", 10)
+        rules.auto_bid(state)
+        self.assertEqual([1, 3], state.auction.passed)
+        assert state.auction.current is not None
+        self.assertEqual(10, state.auction.current.rank)
+
+    def test_auto_bid_passes_at_the_point_stage(self) -> None:
+        state = started_state()
+        rules.bid_rank(state, "p1", 2)
+        rules.bid_points(state, "p2", 62)
+        rules.auto_bid(state)  # seat 3
+        assert state.auction is not None
+        self.assertIn(3, state.auction.passed)
+        assert state.auction.current is not None
+        self.assertEqual(62, state.auction.current.points)
+
+    def test_auto_bid_forced_to_call_the_ace(self) -> None:
+        state = started_state()
+        for seat in (1, 2, 3, 4):
+            rules.pass_auction(state, f"p{seat}")
+        # Seat 0 is the last one standing and nobody has bid yet: the
+        # forced auto-bid calls the ace.
+        rules.auto_bid(state)
+        self.assertEqual(PHASE_CALLING, state.phase)
+        self.assertEqual(0, state.caller)
+        assert state.auction is not None and state.auction.current is not None
+        self.assertEqual(1, state.auction.current.rank)
+        self.assertEqual(61, state.declared_target)
+
+
+class CallTest(unittest.TestCase):
+    def _called_state(self, rank: int = 1) -> ChiamataState:
+        state = started_state()
+        bid(state, 1, rank)
+        for seat in (2, 3, 4, 0):
+            rules.pass_auction(state, f"p{seat}")
+        return state
+
+    def test_call_must_match_the_winning_rank(self) -> None:
+        state = self._called_state(1)
+        with self.assertRaises(IllegalMove):
+            rules.call(state, "p1", "03D")
+        # Any suit of the winning rank is fine.
+        rules.call(state, "p1", "01D")
+        self.assertEqual("D", state.briscola_suit)
+        self.assertEqual(PHASE_PLAYING, state.phase)
+
+    def test_only_the_winner_calls(self) -> None:
+        state = self._called_state()
+        with self.assertRaises(NotYourTurn):
+            rules.call(state, "p2", "01D")
+
+    def test_call_in_hand_means_playing_alone(self) -> None:
+        state = self._called_state(1)
+        # Seat 1 calls a card it holds: solo.
+        state.players[1].hand[0] = card("01S")
+        rules.call(state, "p1", "01S")
+        self.assertTrue(state.solo)
+        self.assertIsNone(state.partner_seat)
+
+    def test_play_starts_with_the_player_after_the_dealer(self) -> None:
+        state = self._called_state(1)
+        rules.call(state, "p1", "01D")
+        self.assertEqual(1, state.turn)
+        self.assertNotEqual(state.caller, None)
+
+    def test_auto_call_names_the_bid_rank(self) -> None:
+        state = self._called_state(10)
+        rules.auto_call(state, random.Random(3))
+        assert state.called_card is not None
+        self.assertEqual(10, state.called_card.rank)
+        self.assertEqual(PHASE_PLAYING, state.phase)
+
+    def test_calling_phase_view(self) -> None:
+        state = self._called_state(1)
+        view = rules.state_for_player(state, "p1")
+        self.assertEqual(PHASE_CALLING, view["phase"])
+        self.assertTrue(view["your_turn"])
+        self.assertEqual(
+            ["01D", "01C", "01S", "01B"], view["callable_cards"]
+        )
+        other = rules.state_for_player(state, "p2")
+        self.assertNotIn("callable_cards", other)
+
+
+class PlayTest(unittest.TestCase):
+    def test_five_player_trick_resolution(self) -> None:
+        state = make_state(
+            [["02D"], ["05D"], ["04D"], ["07D"], ["06D"]],
+            briscola_suit="S",
+            caller=0,
+            called_card="01D",
+            called_played=True,
+            partner_seat=4,
+            turn=0,
+        )
+        play_all(state)
+        assert state.last_trick is not None
+        self.assertEqual(3, state.last_trick.winner)
+
+    def test_trump_wins(self) -> None:
+        state = make_state(
+            [["02D"], ["01D"], ["04D"], ["02C"], ["03D"]],
+            briscola_suit="C",
+            caller=0,
+            called_card="01D",
+            called_played=True,
+            partner_seat=4,
+            turn=0,
+        )
+        play_all(state)
+        assert state.last_trick is not None
+        self.assertEqual(3, state.last_trick.winner)
+
+    def test_called_card_reveals_the_partner(self) -> None:
+        state = make_state(
+            [["02D"], ["01D"], ["04D"], ["07D"], ["06D"]],
+            briscola_suit="D",
+            caller=0,
+            called_card="01S",
+            turn=1,
+        )
+        self.assertFalse(state.called_played)
+        view = rules.state_for_player(state, "p2")
+        roles = {p["seat"]: p["team"] for p in view["players"]}
+        self.assertEqual(ROLE_CALLER, roles[0])
+        self.assertNotIn("scores", view)
+        rules.play(state, "p1", "01D")
+        # The called card has not been played yet.
+        self.assertFalse(state.called_played)
+        # Drive the trick until the called card appears: give it to seat 3.
+        state.players[3].hand = [card("01S")]
+        state.turn = 3
+        rules.play(state, "p3", "01S")
+        self.assertTrue(state.called_played)
+        self.assertEqual(3, state.partner_seat)
+        view = rules.state_for_player(state, "p2")
+        roles = {p["seat"]: p["team"] for p in view["players"]}
+        self.assertEqual(ROLE_CALLER, roles[0])
+        self.assertEqual(ROLE_PARTNER, roles[3])
+        self.assertEqual(ROLE_DEFENDER, roles[1])
+        self.assertIn("scores", view)
+
+    def test_called_card_played_by_the_caller_is_solo(self) -> None:
+        state = make_state(
+            [["01S", "02D"], ["04D"], ["07D"], ["06D"], ["05D"]],
+            briscola_suit="S",
+            caller=0,
+            called_card="01S",
+            solo=True,
+            turn=0,
+        )
+        rules.play(state, "p0", "01S")
+        self.assertTrue(state.called_played)
+        self.assertIsNone(state.partner_seat)
+        view = rules.state_for_player(state, "p4")
+        self.assertTrue(view["solo"])
+        roles = {p["seat"]: p["team"] for p in view["players"]}
+        self.assertEqual(ROLE_CALLER, roles[0])
+        self.assertEqual(ROLE_DEFENDER, roles[1])
+
+    def test_play_validations(self) -> None:
+        state = make_state(
+            [["02D"], ["05D"], ["04D"], ["07D"], ["06D"]],
+            briscola_suit="S",
+            caller=0,
+            turn=0,
+        )
+        with self.assertRaises(NotYourTurn):
+            rules.play(state, "p1", "05D")
+        with self.assertRaises(CardNotInHand):
+            rules.play(state, "p0", "01D")
+        state.phase = PHASE_FINISHED
+        with self.assertRaises(GameFinished):
+            rules.play(state, "p0", "02D")
+
+    def test_play_rejected_before_the_call(self) -> None:
+        state = make_state(
+            [["02D"], ["05D"], ["04D"], ["07D"], ["06D"]],
+            caller=0,
+            turn=0,
+            phase=PHASE_CALLING,
+        )
+        with self.assertRaises(IllegalMove):
+            rules.play(state, "p0", "02D")
+
+    def test_auto_play_advances(self) -> None:
+        state = make_state(
+            [["02D", "03C"], ["05D"], ["04D"], ["07D"], ["06D"]],
+            briscola_suit="S",
+            caller=0,
+            called_card="09B",
+            turn=0,
+        )
+        rules.auto_play(state, random.Random(7))
+        self.assertEqual(1, state.turn)
+        self.assertEqual(1, len(state.trick))
+        self.assertEqual(1, len(state.players[0].hand))
+
+
+class ScoringTest(unittest.TestCase):
+    def _piles(self):
+        # 60 points in denari + coppe, 60 in spade + bastoni.
+        a_cards = [f"{rank:02d}D" for rank in (1, 3, 10, 9, 8)] + [
+            f"{rank:02d}C" for rank in (1, 3, 10, 9, 8)
+        ]
+        b_cards = [f"{rank:02d}S" for rank in (1, 3, 10, 9, 8)] + [
+            f"{rank:02d}B" for rank in (1, 3, 10, 9, 8)
+        ]
+        return a_cards, b_cards
+
+    def test_side_points_split_caller_side_and_defenders(self) -> None:
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            partner_seat=3,
+            called_played=True,
+            captured=[
+                ["01D"],          # caller, side A: 11
+                ["03C", "01S"],   # defender: 21
+                ["10D"],          # defender: 4
+                ["01C"],          # partner, side A: 11
+                ["03S"],          # defender: 10
+            ],
+        )
+        caller_points, defender_points = rules.side_points(state)
+        self.assertEqual(22, caller_points)
+        self.assertEqual(35, defender_points)
+
+    def test_solo_side_points(self) -> None:
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            solo=True,
+            called_played=True,
+            captured=[["01D"], ["01C"], ["03D"], ["03C"], ["10D"]],
+        )
+        caller_points, defender_points = rules.side_points(state)
+        self.assertEqual(11, caller_points)
+        self.assertEqual(35, defender_points)
+
+    def test_calling_side_wins_at_the_target(self) -> None:
+        a_cards, b_cards = self._piles()
+        b_rest = [c for c in b_cards if c != "01S"]
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            partner_seat=1,
+            called_played=True,
+            captured=[a_cards, ["01S"], [], b_rest, []],
+        )
+        rules._end_deal(state)
+        self.assertEqual(PHASE_FINISHED, state.phase)
+        self.assertEqual(SIDE_CALLER, state.winner)
+        self.assertEqual([71, 49], state.scores)
+
+    def test_defenders_win_below_the_declared_target(self) -> None:
+        a_cards, b_cards = self._piles()
+        # Calling side only 30 points of the 61 needed.
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            partner_seat=1,
+            called_played=True,
+            captured=[a_cards[:5], [], [], b_cards, []],
+        )
+        rules._end_deal(state)
+        self.assertEqual(PHASE_FINISHED, state.phase)
+        self.assertEqual(SIDE_DEFENDERS, state.winner)
+        self.assertEqual([30, 60], state.scores)
+
+    def test_patta_replays_the_deal_with_a_new_auction(self) -> None:
+        a_cards, b_cards = self._piles()
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            partner_seat=1,
+            called_played=True,
+            captured=[a_cards, [], [], b_cards, []],
+        )
+        rules._end_deal(state)
+        self.assertEqual(PHASE_AUCTION, state.phase)
+        self.assertEqual(2, state.hand_number)
+        self.assertEqual(1, state.dealer)
+        assert state.auction is not None
+        self.assertEqual(2, state.auction.turn)
+        self.assertIsNone(state.caller)
+        self.assertIsNone(state.called_card)
+        # The patta entry is kept in the audit trail.
+        entry = state.hand_scores[-1]
+        self.assertTrue(entry["patta"])
+        self.assertEqual({"A": 60, "B": 60}, entry["points"])
+
+    def test_raised_target_disables_patta(self) -> None:
+        a_cards, b_cards = self._piles()
+        state = make_state(
+            [[], [], [], [], []],
+            briscola_suit="D",
+            caller=0,
+            partner_seat=1,
+            called_played=True,
+            declared_target=62,
+            captured=[a_cards, [], [], b_cards, []],
+        )
+        rules._end_deal(state)
+        self.assertEqual(PHASE_FINISHED, state.phase)
+        self.assertEqual(SIDE_DEFENDERS, state.winner)
+
+    def test_full_deal_scores_120(self) -> None:
+        state = started_state()
+        rng = random.Random(2026)
+        moves = 0
+        while state.phase != PHASE_FINISHED and moves < 5000:
+            if state.phase == PHASE_AUCTION:
+                rules.auto_bid(state)
+            elif state.phase == PHASE_CALLING:
+                rules.auto_call(state, rng)
+            else:
+                rules.auto_play(state, rng)
+            moves += 1
+        self.assertEqual(PHASE_FINISHED, state.phase)
+        self.assertEqual(120, sum(state.scores))
+        self.assertIn(state.winner, (SIDE_CALLER, SIDE_DEFENDERS))
+        captured = sum(len(p.captured) for p in state.players)
+        self.assertEqual(40, captured)
+
+
+class ViewTest(unittest.TestCase):
+    def test_state_for_player_hides_other_hands(self) -> None:
+        state = make_state(
+            [["02D", "03C"], ["04D"], ["05D"], ["06D"], ["07D"]],
+            briscola_suit="D",
+            caller=0,
+            called_card="01D",
+            called_played=False,
+            turn=0,
+        )
+        view = rules.state_for_player(state, "p0")
+        players = {p["seat"]: p for p in view["players"]}
+        self.assertEqual(["02D", "03C"], players[0]["hand"])
+        self.assertNotIn("hand", players[1])
+        self.assertEqual(1, players[1]["cards_left"])
+        self.assertEqual("01D", view["called_card"])
+        self.assertEqual(5, view["player_count"])
+
+    def test_spectator_sees_public_information_only(self) -> None:
+        state = make_state(
+            [["02D"], ["04D"], ["05D"], ["06D"], ["07D"]],
+            briscola_suit="D",
+            caller=2,
+            called_card="01D",
+            called_played=False,
+        )
+        view = rules.state_for_player(state, None)
+        for player in view["players"]:
+            self.assertNotIn("hand", player)
+        self.assertNotIn("your_turn", view)
+        self.assertNotIn("scores", view)
+        roles = {p["seat"]: p["team"] for p in view["players"]}
+        self.assertEqual(ROLE_CALLER, roles[2])
+        self.assertEqual("", roles[0])
+
+    def test_player_points_are_public(self) -> None:
+        state = make_state(
+            [["02D"], ["04D"], ["05D"], ["06D"], ["07D"]],
+            briscola_suit="D",
+            caller=0,
+            captured=[["01C", "03B"], ["10D"], [], [], []],
+        )
+        view = rules.state_for_player(state, "p0")
+        players = {p["seat"]: p for p in view["players"]}
+        self.assertEqual(21, players[0]["points"])
+        self.assertEqual(4, players[1]["points"])
+        self.assertEqual(2, players[0]["captured_count"])
+
+
+class SerializationTest(unittest.TestCase):
+    def test_state_roundtrip(self) -> None:
+        state = started_state()
+        bid(state, 1, 10)
+        bid(state, 2, 7)
+        restored = ChiamataState.from_json(state.to_json())
+        self.assertEqual(state.phase, restored.phase)
+        self.assertEqual(state.hand_number, restored.hand_number)
+        self.assertEqual(state.turn, restored.turn)
+        assert restored.auction is not None and state.auction is not None
+        self.assertEqual(state.auction.active, restored.auction.active)
+        self.assertEqual(state.auction.passed, restored.auction.passed)
+        self.assertEqual(
+            state.auction.history, restored.auction.history
+        )
+        self.assertEqual(
+            [[c.code for c in p.hand] for p in state.players],
+            [[c.code for c in p.hand] for p in restored.players],
+        )
+
+    def test_legacy_state_defaults(self) -> None:
+        state = started_state()
+        data = state.to_json()
+        del data["auction"]
+        del data["called_card"]
+        del data["declared_target"]
+        restored = ChiamataState.from_json(data)
+        self.assertIsNone(restored.auction)
+        self.assertIsNone(restored.called_card)
+        self.assertEqual(rules.DEFAULT_TARGET, restored.declared_target)
+        self.assertFalse(restored.solo)
+
+
+if __name__ == "__main__":
+    unittest.main()

server/packages/tavolo-briscola/tests/test_chiamata_plugin.py

@@ -0,0 +1,421 @@
+"""Adapter tests: the platform contract over the briscola chiamata rules."""
+from __future__ import annotations
+
+import unittest
+from datetime import datetime, timedelta, timezone
+
+from tavolo.briscola import BriscolaChiamataEngine
+from tavolo.briscola import chiamata as rules
+from tavolo.briscola.chiamata import (
+    PHASE_AUCTION,
+    PHASE_CALLING,
+    PHASE_FINISHED,
+    PHASE_LOBBY,
+    PHASE_PLAYING,
+    ROLE_CALLER,
+    ROLE_DEFENDER,
+    ROLE_PARTNER,
+    ChiamataState,
+)
+from tavolo.briscola.state import Card
+from tavolo.platform import GameSession, Seat
+from tavolo.platform.errors import (
+    AlreadyJoined,
+    GameError,
+    GameNotStarted,
+    IllegalMove,
+)
+
+
+def _session(engine, **options) -> GameSession:
+    session = GameSession(
+        id="c1",
+        game_type=engine.id,
+        join_code="CODE01",
+        creator_sub="p0",
+        players=[Seat(user_sub="p0", display_name="P0")],
+    )
+    engine.create(session, options)
+    return session
+
+
+def _started(engine, **options) -> GameSession:
+    session = _session(engine, **options)
+    for i in range(1, engine.max_players):
+        engine.join(session, f"p{i}", f"P{i}")
+    return session
+
+
+def _player_on_turn(session: GameSession):
+    state = session.state
+    return next(p for p in state.players if p.seat == state.turn)
+
+
+def _drive_to_finish(engine, session: GameSession, limit: int = 200000) -> None:
+    moves = 0
+    while not engine.is_finished(session) and moves < limit:
+        state = session.state
+        if state.phase == PHASE_AUCTION:
+            player = _player_on_turn(session)
+            try:
+                engine.handle_action(session, player.sub, "pass", {})
+            except IllegalMove:
+                # The last player standing must bid.
+                engine.handle_action(session, player.sub, "bid", {"rank": 2})
+        elif state.phase == PHASE_CALLING:
+            assert state.auction is not None and state.auction.current is not None
+            caller = next(
+                p for p in state.players if p.seat == state.caller
+            )
+            card = Card(rank=state.auction.current.rank, suit="D")
+            engine.handle_action(session, caller.sub, "call", {"card": card.code})
+        else:
+            player = _player_on_turn(session)
+            engine.handle_action(
+                session, player.sub, "play", {"card": player.hand[0].code}
+            )
+        moves += 1
+    assert engine.is_finished(session), "match did not finish"
+
+
+class MetadataTest(unittest.TestCase):
+    def test_metadata(self) -> None:
+        engine = BriscolaChiamataEngine()
+        self.assertEqual("briscola_chiamata", engine.id)
+        self.assertEqual("Briscola chiamata", engine.name)
+        self.assertTrue(engine.description)
+        self.assertEqual(5, engine.min_players)
+        self.assertEqual(5, engine.max_players)
+        self.assertEqual({}, engine.options_schema)
+
+
+class CreateJoinTest(unittest.TestCase):
+    def test_create_seats_creator_without_a_team(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _session(engine)
+        self.assertIsNone(session.players[0].team)
+        self.assertIsInstance(session.state, ChiamataState)
+        self.assertEqual(PHASE_LOBBY, session.state.phase)
+        self.assertTrue(engine.in_lobby(session))
+
+    def test_join_starts_when_full(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _session(engine)
+        self.assertTrue(engine.in_lobby(session))
+        for i in range(1, 4):
+            engine.join(session, f"p{i}", f"P{i}")
+        self.assertTrue(engine.in_lobby(session))
+        engine.join(session, "p4", "P4")
+        self.assertFalse(engine.in_lobby(session))
+        self.assertEqual(PHASE_AUCTION, session.state.phase)
+        self.assertEqual(5, len(session.players))
+        for seat in session.players:
+            self.assertIsNone(seat.team)
+
+    def test_join_errors(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _session(engine)
+        with self.assertRaises(AlreadyJoined):
+            engine.join(session, "p0", "P0")
+        for i in range(1, 5):
+            engine.join(session, f"p{i}", f"P{i}")
+        with self.assertRaises(GameNotStarted):
+            engine.join(session, "p5", "P5")
+
+    def test_timeouts_come_from_the_engine(self) -> None:
+        engine = BriscolaChiamataEngine(
+            turn_timeout_seconds=7, hand_ack_timeout_seconds=9
+        )
+        session = _session(engine)
+        self.assertEqual(7, session.state.turn_timeout)
+
+
+class ActionTest(unittest.TestCase):
+    def test_unknown_action_rejected(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "dance", {})
+
+    def test_bid_payload_validation(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "bid", {})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "bid", {"rank": "ace"})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "bid", {"rank": True})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "bid", {"points": False})
+        # points cannot be raised before a bid of the 2
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "bid", {"points": 64})
+
+    def test_auction_flow_through_actions(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        engine.handle_action(session, "p1", "bid", {"rank": 1})
+        engine.handle_action(session, "p2", "pass", {})
+        engine.handle_action(session, "p3", "bid", {"rank": 2})
+        engine.handle_action(session, "p4", "bid", {"points": 64})
+        engine.handle_action(session, "p0", "pass", {})
+        engine.handle_action(session, "p1", "pass", {})
+        engine.handle_action(session, "p3", "pass", {})
+        state = session.state
+        self.assertEqual(PHASE_CALLING, state.phase)
+        self.assertEqual(4, state.caller)
+        self.assertEqual(64, state.declared_target)
+        assert state.auction is not None and state.auction.current is not None
+        self.assertEqual(2, state.auction.current.rank)
+
+        engine.handle_action(session, "p4", "call", {"card": "02S"})
+        self.assertEqual(PHASE_PLAYING, state.phase)
+        self.assertEqual("S", state.briscola_suit)
+
+        # Play the first card of the player on turn.
+        player = _player_on_turn(session)
+        engine.handle_action(
+            session, player.sub, "play", {"card": player.hand[0].code}
+        )
+        self.assertEqual(1, len(state.trick))
+
+    def test_call_payload_validation(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        engine.handle_action(session, "p1", "bid", {"rank": 2})
+        for i in (2, 3, 4, 0):
+            engine.handle_action(session, f"p{i}", "pass", {})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "call", {"card": 42})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "call", {"card": "nope"})
+        with self.assertRaises(IllegalMove):
+            engine.handle_action(session, "p1", "call", {"card": "01D"})
+
+    def test_finished_match_rejects_actions(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        _drive_to_finish(engine, session)
+        with self.assertRaises(GameError):
+            engine.handle_action(session, session.players[0].user_sub, "play", {})
+
+
+class ViewTest(unittest.TestCase):
+    def test_view_hides_other_hands_and_roles(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        view = engine.view_for(session, "p0")
+        players = {p["seat"]: p for p in view["players"]}
+        self.assertIn("hand", players[0])
+        self.assertNotIn("hand", players[1])
+        self.assertNotIn("your_turn", view)
+        self.assertNotIn("scores", view)
+        self.assertEqual(5, view["player_count"])
+        # p1 opens the auction.
+        auction = view["auction"]
+        self.assertEqual(1, auction["turn"])
+        self.assertIsNone(auction["current"])
+
+    def test_view_marks_the_acting_player(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        view = engine.view_for(session, "p1")
+        self.assertTrue(view["your_turn"])
+        self.assertIn("legal_bids", view)
+        # The caller is labeled as soon as the auction is won.
+        engine.handle_action(session, "p1", "bid", {"rank": 1})
+        for i in (2, 3, 4, 0):
+            engine.handle_action(session, f"p{i}", "pass", {})
+        view = engine.view_for(session, "p0")
+        self.assertIn("callable_cards", engine.view_for(session, "p1"))
+        roles = {p["seat"]: p["team"] for p in view["players"]}
+        self.assertEqual(ROLE_CALLER, roles[1])
+
+    def test_spectator_view(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        view = engine.view_for(session, None)
+        for player in view["players"]:
+            self.assertNotIn("hand", player)
+        self.assertNotIn("your_turn", view)
+
+    def test_lobby_view(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _session(engine)
+        lobby = engine.lobby_view(session)
+        self.assertEqual("lobby", lobby["phase"])
+        self.assertEqual(61, lobby["declared_target"])
+
+
+class SerializationTest(unittest.TestCase):
+    def test_state_roundtrip(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        engine.handle_action(session, "p1", "bid", {"rank": 10})
+        restored = engine.state_from_json(engine.state_to_json(session.state))
+        self.assertIsInstance(restored, ChiamataState)
+        self.assertEqual(session.state.phase, restored.phase)
+        self.assertEqual(session.state.turn, restored.turn)
+        assert restored.auction is not None and session.state.auction is not None
+        self.assertEqual(session.state.auction.history, restored.auction.history)
+        self.assertEqual(
+            [p.sub for p in session.state.players],
+            [p.sub for p in restored.players],
+        )
+
+
+class DeadlineTest(unittest.TestCase):
+    def test_no_deadline_in_lobby(self) -> None:
+        engine = BriscolaChiamataEngine()
+        self.assertIsNone(engine.next_deadline(_session(engine)))
+
+    def test_auction_deadline_and_revalidation(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        deadline = engine.next_deadline(session)
+        assert deadline is not None
+        self.assertEqual("auction", deadline.kind)
+        with self.assertRaises(GameError):
+            engine.fire_deadline(session, "auction", "auction:1:1:0")
+        engine.fire_deadline(session, deadline.kind, deadline.token)
+        # The auto-bid moved the auction on: a fresh deadline exists.
+        state = session.state
+        self.assertIn(
+            state.phase, (PHASE_AUCTION, PHASE_CALLING, PHASE_PLAYING)
+        )
+        self.assertIsNotNone(engine.next_deadline(session))
+
+    def test_stale_auction_deadline_after_a_bid(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        deadline = engine.next_deadline(session)
+        assert deadline is not None
+        engine.handle_action(session, "p1", "bid", {"rank": 1})
+        with self.assertRaises(GameError):
+            engine.fire_deadline(session, deadline.kind, deadline.token)
+
+    def test_call_deadline_auto_calls(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        engine.handle_action(session, "p1", "bid", {"rank": 2})
+        for i in (2, 3, 4, 0):
+            engine.handle_action(session, f"p{i}", "pass", {})
+        deadline = engine.next_deadline(session)
+        assert deadline is not None
+        self.assertEqual("call", deadline.kind)
+        engine.fire_deadline(session, deadline.kind, deadline.token)
+        state = session.state
+        self.assertEqual(PHASE_PLAYING, state.phase)
+        assert state.called_card is not None
+        self.assertEqual(2, state.called_card.rank)
+
+    def test_turn_deadline_auto_plays(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        engine.handle_action(session, "p1", "bid", {"rank": 2})
+        for i in (2, 3, 4, 0):
+            engine.handle_action(session, f"p{i}", "pass", {})
+        engine.handle_action(session, "p1", "call", {"card": "02D"})
+        deadline = engine.next_deadline(session)
+        assert deadline is not None
+        self.assertEqual("turn", deadline.kind)
+        state = session.state
+        before = state.turn
+        engine.fire_deadline(session, deadline.kind, deadline.token)
+        self.assertEqual(1, len(state.trick))
+        self.assertNotEqual(before, state.turn)
+
+
+class ResultTest(unittest.TestCase):
+    def test_result_of_finished_match(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        _drive_to_finish(engine, session)
+        state = session.state
+        result = engine.result(session)
+        sizes = sorted(len(team) for team in result.teams)
+        self.assertIn(sizes, ([2, 3], [1, 4]))
+        self.assertEqual(5, len(result.players))
+        self.assertIn(result.winner_team, (0, 1))
+        for player in result.players:
+            self.assertIn(player.team, (ROLE_CALLER, ROLE_PARTNER, ROLE_DEFENDER))
+            self.assertEqual(
+                player.won,
+                (player.team in (ROLE_CALLER, ROLE_PARTNER))
+                == (result.winner_team == 0),
+            )
+            self.assertIn("points", player.details)
+        summary = result.summary
+        for key in (
+            "team_a_score",
+            "team_b_score",
+            "winner_team",
+            "declared_target",
+            "called_card",
+            "caller",
+            "solo",
+            "deals_played",
+            "deal_scores",
+        ):
+            self.assertIn(key, summary)
+        self.assertIn(summary["winner_team"], ("Chiamante", "Difensori"))
+        self.assertEqual(state.hand_number, summary["deals_played"])
+
+    def test_result_requires_finished_match(self) -> None:
+        engine = BriscolaChiamataEngine()
+        with self.assertRaises(GameError):
+            engine.result(_started(engine))
+
+    def test_solo_result_teams(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        state = session.state
+        # Force a finished solo match: seat 0 called its own card.
+        state.caller = 0
+        state.solo = True
+        state.partner_seat = None
+        state.called_played = True
+        state.called_card = Card.parse("01D")
+        # Caller side captures 71 (60 + 11), defenders 49.
+        state.players[0].captured = [
+            Card.parse(code)
+            for code in [f"{rank:02d}D" for rank in (1, 3, 10, 9, 8)]
+            + [f"{rank:02d}C" for rank in (1, 3, 10, 9, 8)]
+            + ["01S"]
+        ]
+        state.players[1].captured = [
+            Card.parse(code)
+            for code in [f"{rank:02d}S" for rank in (3, 10, 9, 8)]
+            + [f"{rank:02d}B" for rank in (1, 3, 10, 9, 8)]
+        ]
+        state.scores = [71, 49]
+        state.winner = 0
+        state.phase = PHASE_FINISHED
+        result = engine.result(session)
+        self.assertEqual([1, 4], sorted(len(team) for team in result.teams))
+        # The lone caller won: exactly one winner.
+        self.assertEqual(1, sum(1 for p in result.players if p.won))
+        caller = next(p for p in result.players if p.team == ROLE_CALLER)
+        self.assertTrue(caller.won)
+        self.assertEqual(71.0, caller.score)
+
+    def test_game_over_view(self) -> None:
+        engine = BriscolaChiamataEngine()
+        session = _started(engine)
+        state = session.state
+        state.phase = PHASE_FINISHED
+        state.winner = 1
+        state.scores = [55, 65]
+        state.caller = 2
+        state.solo = False
+        state.partner_seat = 4
+        state.called_card = Card.parse("03C")
+        over = engine.game_over_view(session, "p0")
+        self.assertEqual({"A": 55, "B": 65}, over["scores"])
+        self.assertEqual("Difensori", over["winner"])
+        self.assertEqual("03C", over["called_card"])
+
+
+if __name__ == "__main__":
+    unittest.main()

server/tests/test_briscola_chiamata.py

@@ -0,0 +1,390 @@
+"""Briscola chiamata integration tests: lobby, auction, websocket play, timeouts.
+
+The per-package suite covers the rules and the engine contract; these
+tests wire the game through the full platform stack (REST, WebSocket,
+deadline scheduler).
+"""
+from __future__ import annotations
+
+import asyncio
+import unittest
+from datetime import datetime, timedelta, timezone
+
+from httpx import ASGITransport, AsyncClient
+from httpx_ws import aconnect_ws
+from httpx_ws.transport import ASGIWebSocketTransport
+
+from tavolo.app import app, game_store, platform
+from tavolo.briscola.chiamata import (
+    PHASE_AUCTION,
+    PHASE_CALLING,
+    PHASE_PLAYING,
+    Auction,
+    Bid,
+)
+from tavolo.platform import GameSession, Seat
+from tests.helpers import async_test, make_user, oidc_user, ws_users
+
+PLAYERS = ("alice", "bob", "carol", "dave", "erin")
+
+
+async def _create_and_join(client: AsyncClient) -> dict:
+    """Create a chiamata game and seat all five players; return the view."""
+    with oidc_user(PLAYERS[0]):
+        created = await client.post("/api/games", json={"game_type": "briscola_chiamata"})
+    assert created.status_code == 201, created.text
+    code = created.json()["join_code"]
+    body = created.json()
+    for player in PLAYERS[1:]:
+        with oidc_user(player):
+            joined = await client.post("/api/games/join", json={"code": code})
+        assert joined.status_code == 200, joined.text
+        body = joined.json()
+    return body
+
+
+class ChiamataRoutesTest(unittest.TestCase):
+    @async_test
+    async def test_create_and_seat_five_players(self) -> None:
+        transport = ASGITransport(app=app)
+        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
+            with oidc_user(PLAYERS[0]):
+                created = await client.post(
+                    "/api/games", json={"game_type": "briscola_chiamata"}
+                )
+            self.assertEqual(201, created.status_code)
+            body = created.json()
+            self.assertEqual("briscola_chiamata", body["game_type"])
+            self.assertEqual("lobby", body["phase"])
+            self.assertEqual(4, body["seats_open"])
+            self.assertIsNone(body["players"][0]["team"])
+            code = body["join_code"]
+
+            for player in PLAYERS[1:4]:
+                with oidc_user(player):
+                    joined = await client.post("/api/games/join", json={"code": code})
+                self.assertEqual("lobby", joined.json()["phase"])
+                self.assertEqual(
+                    4 - (PLAYERS.index(player)), joined.json()["seats_open"]
+                )
+
+            with oidc_user(PLAYERS[4]):
+                started = await client.post("/api/games/join", json={"code": code})
+            state = started.json()
+            self.assertEqual(PHASE_AUCTION, state["phase"])
+            self.assertEqual(0, state["seats_open"])
+            self.assertEqual(5, len(state["players"]))
+            for seat in state["players"]:
+                # Roles are hidden until the called card is played.
+                self.assertEqual("", seat["team"])
+                self.assertEqual(8, seat["cards_left"])
+            # The auction opens with the player after the dealer (seat 0).
+            self.assertEqual(1, state["auction"]["turn"])
+            self.assertEqual([0, 1, 2, 3], state["auction"]["active"][0:4])
+            self.assertIsNone(state["auction"]["current"])
+            self.assertIsNotNone(state["auction_deadline"])
+            # The last joiner's personalized view carries their own hand.
+            self.assertIn("hand", state["players"][4])
+            self.assertEqual(8, len(state["players"][4]["hand"]))
+            self.assertNotIn("hand", state["players"][0])
+            # There is no stock in this variant.
+            self.assertNotIn("stock_count", state)
+
+            # A non-player watches without hands or the join code.
+            with oidc_user("mallory"):
+                watched = await client.get(f"/api/games/{state['id']}")
+            self.assertEqual(200, watched.status_code)
+            spectator = watched.json()
+            self.assertTrue(spectator["spectator"])
+            self.assertNotIn("join_code", spectator)
+            for seat in spectator["players"]:
+                self.assertNotIn("hand", seat)
+
+    @async_test
+    async def test_preview_lists_chiamata(self) -> None:
+        transport = ASGITransport(app=app)
+        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
+            with oidc_user("alice"):
+                created = await client.post(
+                    "/api/games", json={"game_type": "briscola_chiamata"}
+                )
+            code = created.json()["join_code"]
+            with oidc_user("bob"):
+                preview = await client.get(f"/api/games/preview?code={code}")
+            self.assertEqual(200, preview.status_code)
+            body = preview.json()
+            self.assertEqual("briscola_chiamata", body["game_type"])
+            self.assertEqual("Briscola chiamata", body["game_name"])
+            self.assertTrue(body["game_description"])
+            self.assertEqual("lobby", body["phase"])
+            self.assertEqual(4, body["seats_open"])
+
+
+class ChiamataWebSocketTest(unittest.TestCase):
+    @async_test
+    async def test_auction_call_and_play_over_the_socket(self) -> None:
+        api_transport = ASGITransport(app=app)
+        async with AsyncClient(transport=api_transport, base_url="http://127.0.0.1") as client:
+            state = await _create_and_join(client)
+            game_id = state["id"]
+
+            ws_transport = ASGIWebSocketTransport(app=app)
+            async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+                with ws_users([make_user("bob"), make_user("alice")]):
+                    async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as bob_ws:
+                        first = await bob_ws.receive_json()
+                        self.assertEqual("state", first["type"])
+                        self.assertEqual(PHASE_AUCTION, first["game"]["phase"])
+                        self.assertTrue(first["game"].get("your_turn"))
+                        self.assertIn("legal_bids", first["game"])
+
+                        async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as alice_ws:
+                            await alice_ws.receive_json()
+                            # Bob (seat 1) opens the bidding with the two.
+                            await bob_ws.send_json({"action": "bid", "rank": 2})
+                            update = await bob_ws.receive_json()
+                            self.assertEqual("state", update["type"])
+                            current = update["game"]["auction"]["current"]
+                            self.assertEqual(
+                                {"seat": 1, "rank": 2, "points": 61}, current
+                            )
+                            self.assertEqual(2, update["game"]["auction"]["turn"])
+                            # Alice receives the broadcast of Bob's bid.
+                            broadcast = await alice_ws.receive_json()
+                            self.assertEqual("state", broadcast["type"])
+                            # Alice (seat 0) is not on turn: her bid is an error.
+                            await alice_ws.send_json({"action": "bid", "rank": 3})
+                            error = await alice_ws.receive_json()
+                            self.assertEqual("error", error["type"])
+
+            # The remaining players pass; Bob wins the auction and is
+            # asked to name the card.
+            engine = platform.registry.require("briscola_chiamata")
+            session = await game_store.load(game_id)
+            assert session is not None
+            for sub in ("carol", "dave", "erin", "alice"):
+                engine.handle_action(session, sub, "pass", {})
+            await game_store.save(session)
+            self.assertEqual(PHASE_CALLING, session.state.phase)
+            self.assertEqual(1, session.state.caller)
+
+            async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+                with ws_users([make_user("bob")]):
+                    async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as ws:
+                        first = await ws.receive_json()
+                        self.assertEqual(PHASE_CALLING, first["game"]["phase"])
+                        self.assertTrue(first["game"].get("your_turn"))
+                        self.assertEqual(
+                            ["02D", "02C", "02S", "02B"],
+                            first["game"]["callable_cards"],
+                        )
+                        await ws.send_json(
+                            {"action": "call", "card": "02D"}
+                        )
+                        update = await ws.receive_json()
+                        self.assertEqual(PHASE_PLAYING, update["game"]["phase"])
+                        self.assertEqual("D", update["game"]["briscola_suit"])
+                        self.assertEqual("02D", update["game"]["called_card"])
+                        self.assertEqual(1, update["game"]["turn"])
+
+                        # Bob is first to play (player after the dealer).
+                        bob = next(
+                            p for p in update["game"]["players"] if p["seat"] == 1
+                        )
+                        card = bob["hand"][0]
+                        await ws.send_json({"action": "play", "card": card})
+                        update = await ws.receive_json()
+                        self.assertEqual(
+                            [{"seat": 1, "card": card}], update["game"]["trick"]
+                        )
+
+    @async_test
+    async def test_spectator_cannot_act(self) -> None:
+        api_transport = ASGITransport(app=app)
+        async with AsyncClient(transport=api_transport, base_url="http://127.0.0.1") as client:
+            state = await _create_and_join(client)
+            game_id = state["id"]
+
+        ws_transport = ASGIWebSocketTransport(app=app)
+        async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+            with ws_users([make_user("mallory")]):
+                async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as ws:
+                    first = await ws.receive_json()
+                    self.assertTrue(first["game"]["spectator"])
+                    self.assertNotIn("join_code", first["game"])
+                    for seat in first["game"]["players"]:
+                        self.assertNotIn("hand", seat)
+                    await ws.send_json({"action": "bid", "rank": 1})
+                    error = await ws.receive_json()
+                    self.assertEqual("forbidden", error["code"])
+
+
+class ChiamataTimeoutTest(unittest.TestCase):
+    async def _seed(self, game_id: str, join_code: str, state_mutator) -> str:
+        from tavolo.briscola import chiamata as rules
+
+        session = GameSession(
+            id=game_id,
+            game_type="briscola_chiamata",
+            join_code=join_code,
+            creator_sub=PLAYERS[0],
+            players=[
+                Seat(user_sub=name, display_name=name.capitalize())
+                for name in PLAYERS
+            ],
+        )
+        session.state = rules.create_game(PLAYERS[0], "Alice", turn_timeout=1)
+        for name in PLAYERS[1:]:
+            rules.join_game(session.state, name, name.capitalize())
+        state_mutator(session.state)
+        await game_store.save(session)
+        return session.id
+
+    @async_test
+    async def test_auction_timeout_auto_passes(self) -> None:
+        game_id = await self._seed(
+            "chiamata-auction-timeout-1", "CH0001", lambda state: None
+        )
+        ws_transport = ASGIWebSocketTransport(app=app)
+        async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+            with ws_users([make_user("bob")]):
+                async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as ws:
+                    first = await ws.receive_json()
+                    self.assertEqual(PHASE_AUCTION, first["game"]["phase"])
+                    self.assertIsNotNone(first["game"]["auction_deadline"])
+
+                    update = None
+                    for _ in range(20):
+                        try:
+                            update = await asyncio.wait_for(
+                                ws.receive_json(), timeout=2
+                            )
+                        except asyncio.TimeoutError:
+                            break
+                        if (
+                            update.get("type") == "state"
+                            and 1 in update["game"]["auction"]["passed"]
+                        ):
+                            break
+                    self.assertIsNotNone(update)
+                    assert update is not None
+                    # The absent seat 1 passed: nobody bid and the turn
+                    # moved to seat 2.
+                    auction = update["game"]["auction"]
+                    self.assertIn(1, auction["passed"])
+                    self.assertIsNone(auction["current"])
+                    self.assertEqual(2, auction["turn"])
+
+    @async_test
+    async def test_forced_last_bidder_auto_bids_the_ace(self) -> None:
+        def seed(state) -> None:
+            state.phase = PHASE_AUCTION
+            state.auction = Auction(
+                turn=0, active=[0], passed=[1, 2, 3, 4], current=None
+            )
+            state.turn = 0
+            state.auction_deadline = (
+                datetime.now(timezone.utc) + timedelta(seconds=1)
+            ).isoformat()
+            state.call_deadline = None
+
+        game_id = await self._seed("chiamata-forced-ace-1", "CH0003", seed)
+        ws_transport = ASGIWebSocketTransport(app=app)
+        async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+            with ws_users([make_user("alice")]):
+                async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as ws:
+                    first = await ws.receive_json()
+                    self.assertEqual(PHASE_AUCTION, first["game"]["phase"])
+
+                    # The auction times out: seat 0 is forced to bid the
+                    # ace; its call then times out too and a random ace
+                    # suit is named.
+                    played = None
+                    for _ in range(20):
+                        try:
+                            played = await asyncio.wait_for(
+                                ws.receive_json(), timeout=2
+                            )
+                        except asyncio.TimeoutError:
+                            break
+                        if (
+                            played.get("type") == "state"
+                            and played["game"]["phase"] == PHASE_PLAYING
+                        ):
+                            break
+                    self.assertIsNotNone(played)
+                    assert played is not None
+                    self.assertEqual(PHASE_PLAYING, played["game"]["phase"])
+                    self.assertEqual(0, played["game"]["caller"])
+                    card = played["game"]["called_card"]
+                    self.assertIsNotNone(card)
+                    self.assertTrue(card.startswith("01"))
+
+    @async_test
+    async def test_call_and_turn_timeouts(self) -> None:
+        def seed(state) -> None:
+            state.phase = PHASE_CALLING
+            state.auction = Auction(
+                turn=1,
+                active=[1],
+                passed=[0, 2, 3, 4],
+                current=Bid(seat=1, rank=2, points=61),
+            )
+            state.caller = 1
+            state.turn = 1
+            state.auction_deadline = None
+            state.call_deadline = (
+                datetime.now(timezone.utc) + timedelta(seconds=1)
+            ).isoformat()
+
+        game_id = await self._seed(
+            "chiamata-call-timeout-1", "CH0002", seed
+        )
+        ws_transport = ASGIWebSocketTransport(app=app)
+        async with AsyncClient(transport=ws_transport, base_url="http://testserver") as ws_client:
+            with ws_users([make_user("bob")]):
+                async with aconnect_ws(f"/ws/games/{game_id}", ws_client) as ws:
+                    first = await ws.receive_json()
+                    self.assertEqual(PHASE_CALLING, first["game"]["phase"])
+
+                    called = None
+                    for _ in range(20):
+                        try:
+                            called = await asyncio.wait_for(
+                                ws.receive_json(), timeout=2
+                            )
+                        except asyncio.TimeoutError:
+                            break
+                        if (
+                            called.get("type") == "state"
+                            and called["game"]["phase"] == PHASE_PLAYING
+                        ):
+                            break
+                    self.assertIsNotNone(called)
+                    assert called is not None
+                    self.assertEqual(PHASE_PLAYING, called["game"]["phase"])
+                    card = called["game"]["called_card"]
+                    self.assertIsNotNone(card)
+                    self.assertTrue(card.startswith("02"))
+
+                    played = None
+                    for _ in range(20):
+                        try:
+                            played = await asyncio.wait_for(
+                                ws.receive_json(), timeout=2
+                            )
+                        except asyncio.TimeoutError:
+                            break
+                        if (
+                            played.get("type") == "state"
+                            and len(played["game"]["trick"]) == 1
+                        ):
+                            break
+                    self.assertIsNotNone(played)
+                    assert played is not None
+                    # Seat 1 was on turn and was auto-played for.
+                    self.assertEqual(1, played["game"]["trick"][0]["seat"])
+
+
+if __name__ == "__main__":
+    unittest.main()

server/tests/test_routes_games.py

@@ -300,7 +300,12 @@ class GameTypesRouteTest(unittest.TestCase):
         self.assertEqual(200, response.status_code)
         results = response.json()["results"]
         self.assertEqual(
-            ["scopone_scientifico", "briscola", "briscola_a_quattro"],
+            [
+                "scopone_scientifico",
+                "briscola",
+                "briscola_a_quattro",
+                "briscola_chiamata",
+            ],
             [g["id"] for g in results],
         )
         scopone = results[0]
@@ -325,6 +330,12 @@ class GameTypesRouteTest(unittest.TestCase):
         self.assertEqual(4, quattro["min_players"])
         self.assertEqual(4, quattro["max_players"])
         self.assertIn("target_score", quattro["options_schema"]["properties"])
+        chiamata = results[3]
+        self.assertEqual("Briscola chiamata", chiamata["name"])
+        self.assertTrue(chiamata["description"])
+        self.assertEqual(5, chiamata["min_players"])
+        self.assertEqual(5, chiamata["max_players"])
+        self.assertEqual({}, chiamata["options_schema"])
 
     @async_test
     async def test_create_defaults_game_type(self) -> None:

server/tests/test_stats.py

@@ -12,8 +12,11 @@ import unittest
 from httpx import ASGITransport, AsyncClient
 
 from tavolo.app import app, platform, tortoise_mixin
+from tavolo.briscola.chiamata import PHASE_AUCTION, PHASE_CALLING
+from tavolo.briscola.state import Card
 from tavolo.platform import GameSession, Seat
 from tavolo.platform.elo import INITIAL_RATING
+from tavolo.platform.errors import IllegalMove
 from tavolo.platform.models import Match, MatchPlayer, PlayerRating
 from tavolo.platform.stats import save_match_result
 from tavolo.scopone import engine as rules
@@ -222,5 +225,98 @@ class BriscolaStatsTest(unittest.TestCase):
             self.assertEqual(2, len(results[0]["players"]))
 
 
+async def _finished_chiamata_session() -> GameSession:
+    engine = platform.registry.require("briscola_chiamata")
+    session = GameSession(
+        id="stats-chiamata-1",
+        game_type=engine.id,
+        join_code="BC0001",
+        creator_sub="alice",
+        players=[
+            Seat(user_sub=name, display_name=name.capitalize())
+            for name in ("alice", "bob", "carol", "dave", "erin")
+        ],
+    )
+    engine.create(session, {})
+    for name in ("bob", "carol", "dave", "erin"):
+        engine.join(session, name, name.capitalize())
+    moves = 0
+    while not engine.is_finished(session) and moves < 200000:
+        state = session.state
+        if state.phase == PHASE_AUCTION:
+            player = next(p for p in state.players if p.seat == state.turn)
+            try:
+                engine.handle_action(session, player.sub, "pass", {})
+            except IllegalMove:
+                engine.handle_action(session, player.sub, "bid", {"rank": 2})
+        elif state.phase == PHASE_CALLING:
+            assert state.auction is not None and state.auction.current is not None
+            caller = next(p for p in state.players if p.seat == state.caller)
+            card = Card(rank=state.auction.current.rank, suit="D")
+            engine.handle_action(session, caller.sub, "call", {"card": card.code})
+        else:
+            player = next(p for p in state.players if p.seat == state.turn)
+            engine.handle_action(
+                session, player.sub, "play", {"card": player.hand[0].code}
+            )
+        moves += 1
+    assert engine.is_finished(session)
+    return session
+
+
+class ChiamataStatsTest(unittest.TestCase):
+    @async_test
+    async def test_finished_chiamata_match_persisted_with_summary(self) -> None:
+        await tortoise_mixin._bind()
+        ctx = tortoise_mixin._ctx
+        assert ctx is not None
+        engine = platform.registry.require("briscola_chiamata")
+        session = await _finished_chiamata_session()
+        with ctx:
+            await save_match_result(session, engine)
+            self.assertEqual(1, await Match.all().count())
+            self.assertEqual(5, await MatchPlayer.all().count())
+
+            match = await Match.all().first()
+            assert match is not None
+            self.assertEqual("briscola_chiamata", match.game_type)
+            summary = match.result
+            for key in (
+                "team_a_score",
+                "team_b_score",
+                "winner_team",
+                "declared_target",
+                "called_card",
+                "caller",
+                "solo",
+                "deals_played",
+                "deal_scores",
+            ):
+                self.assertIn(key, summary)
+            self.assertIn(summary["winner_team"], ("Chiamante", "Difensori"))
+
+            players = await MatchPlayer.all()
+            roles = {p.team for p in players}
+            self.assertTrue(roles.issubset({"Chiamante", "Socio", "Difensori"}))
+            # Roles match the sides: exactly one caller, the rest defenders
+            # plus at most one partner.
+            self.assertEqual(1, sum(1 for p in players if p.team == "Chiamante"))
+            winner_team = summary["winner_team"]
+            for row in players:
+                on_caller_side = row.team in ("Chiamante", "Socio")
+                self.assertEqual(row.won, on_caller_side == (winner_team == "Chiamante"))
+            # Mean-team Elo: 2v3 or 1v4 moves every winner by +16.
+            ratings = {r.user_sub: r.rating for r in await PlayerRating.all()}
+            self.assertEqual(5, len(ratings))
+            winners = {p.user_sub for p in players if p.won}
+            self.assertEqual(
+                {INITIAL_RATING + 16}, {ratings[sub] for sub in winners}
+            )
+            self.assertEqual(
+                {INITIAL_RATING - 16},
+                {ratings[sub] for sub in ratings if sub not in winners},
+            )
+
+
 if __name__ == "__main__":
     unittest.main()

web/Cargo.toml

@@ -13,7 +13,7 @@ serde_json = "1"
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
 futures = "0.3"
-web-sys = { version = "0.3", features = ["Window", "Location", "Clipboard", "Navigator", "console"] }
+web-sys = { version = "0.3", features = ["Window", "Location", "Clipboard", "Navigator", "console", "Storage"] }
 js-sys = "0.3"
 gloo-timers = "0.3"
 console_error_panic_hook = "0.1"

web/assets/felt.svg

@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="240" height="240" viewBox="0 0 240 240">
+  <!-- Seamless felt grain: fractal noise mapped to semi-transparent black
+       speckles, tiled as a CSS background over the green table gradient.
+       stitchTiles + a filter region equal to the tile keep the seams
+       invisible. -->
+  <filter id="felt" x="0" y="0" width="100%" height="100%" color-interpolation-filters="sRGB">
+    <feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="4" stitchTiles="stitch" result="noise"/>
+    <feColorMatrix in="noise" type="matrix" values="0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0.3 0.3 0.3 0 -0.3"/>
+  </filter>
+  <rect width="240" height="240" filter="url(#felt)"/>
+</svg>

web/src/api.rs

@@ -1,13 +1,32 @@
 //! REST client for the tavolo backend. Same-origin requests carry the
 //! session cookie automatically.
+use crate::auth;
 use crate::model::*;
-use gloo_net::http::Request;
+use gloo_net::http::{Request, Response};
 
 fn server_error(status: u16) -> String {
     format!("server returned {status}")
 }
 
+/// Map a failed response to an error. A `401` additionally starts the
+/// login flow: the session is gone (or the caller was never logged in),
+/// and the user is returned to this page after logging in.
+fn check(resp: &Response) -> Result<(), String> {
+    if resp.status() == 401 {
+        auth::redirect_to_login();
+        return Err("login required".to_string());
+    }
+    if !resp.ok() {
+        return Err(server_error(resp.status()));
+    }
+    Ok(())
+}
+
 /// Fetch the current user; `None` when unauthenticated (401).
+///
+/// Deliberately bypasses [`check`]: an unauthenticated answer is how the
+/// app renders its logged-out state, so it must not trigger the login
+/// redirect.
 pub async fn me() -> Result<Option<User>, String> {
     let resp = Request::get("/api/me")
         .send()
@@ -28,9 +47,7 @@ pub async fn auth_providers() -> Result<Vec<AuthProvider>, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     let page: AuthProvidersPage = resp.json().await.map_err(|e| e.to_string())?;
     Ok(page.providers)
 }
@@ -41,9 +58,7 @@ pub async fn game_types() -> Result<Vec<GameTypeInfo>, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     let page: GameTypesPage = resp.json().await.map_err(|e| e.to_string())?;
     Ok(page.results)
 }
@@ -58,9 +73,7 @@ pub async fn create_game(game_type: &str, options: serde_json::Value) -> Result<
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     resp.json().await.map_err(|e| e.to_string())
 }
 
@@ -71,6 +84,10 @@ pub async fn join_game(code: &str) -> Result<GameView, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
+    if resp.status() == 401 {
+        auth::redirect_to_login();
+        return Err("login required".to_string());
+    }
     if !resp.ok() {
         let body: serde_json::Value = resp.json().await.unwrap_or_default();
         let message = body
@@ -94,9 +111,7 @@ pub async fn join_preview(code: &str) -> Result<Option<JoinPreview>, String> {
     if resp.status() == 404 {
         return Ok(None);
     }
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     resp.json().await.map(Some).map_err(|e| e.to_string())
 }
 
@@ -135,9 +150,7 @@ pub async fn my_games() -> Result<Vec<MyGame>, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     let page: MyGamesPage = resp.json().await.map_err(|e| e.to_string())?;
     Ok(page.results)
 }
@@ -148,9 +161,7 @@ pub async fn my_matches(cursor: Option<&str>) -> Result<MatchesPage, String> {
         None => "/api/me/matches?limit=10".to_string(),
     };
     let resp = Request::get(&url).send().await.map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     resp.json().await.map_err(|e| e.to_string())
 }
 
@@ -160,9 +171,7 @@ pub async fn my_ratings() -> Result<RatingsPage, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     resp.json().await.map_err(|e| e.to_string())
 }
 
@@ -173,8 +182,6 @@ pub async fn leaderboard(game_type: &str) -> Result<LeaderboardPage, String> {
         .send()
         .await
         .map_err(|e| e.to_string())?;
-    if !resp.ok() {
-        return Err(server_error(resp.status()));
-    }
+    check(&resp)?;
     resp.json().await.map_err(|e| e.to_string())
 }

web/src/auth.rs

@@ -0,0 +1,74 @@
+//! Client-side login redirect handling.
+//!
+//! The OIDC callback always returns the browser to the configured
+//! post-login redirect (usually `/`), and the backend's login flow has no
+//! per-request `next` support. So when the API answers `401`, the page the
+//! user is on is saved in `sessionStorage` and restored once a session
+//! exists again.
+use sycamore_router::navigate_replace;
+
+/// `sessionStorage` key holding the page to return to after login.
+const RETURN_TO_KEY: &str = "tavolo.login.return_to";
+
+fn session_storage() -> Option<web_sys::Storage> {
+    web_sys::window()?.session_storage().ok().flatten()
+}
+
+/// The current page (path plus query), the URL to come back to after
+/// login.
+pub fn current_path() -> String {
+    let Some(location) = web_sys::window().map(|w| w.location()) else {
+        return String::new();
+    };
+    format!(
+        "{}{}",
+        location.pathname().unwrap_or_default(),
+        location.search().unwrap_or_default()
+    )
+}
+
+/// Whether a path is a page worth returning to: not the login flow
+/// itself, and not an absolute/protocol-relative URL.
+fn is_restorable(path: &str) -> bool {
+    path.starts_with('/')
+        && !path.starts_with("//")
+        && !path.starts_with("/auth/")
+        && !path.starts_with("/api/")
+        && path != "/login"
+}
+
+/// Handle an expired session: remember the current page and go to the
+/// login page.
+///
+/// The navigation is deferred to a timer so the caller can finish handling
+/// the failed response (e.g. set an error) before its page is unmounted.
+pub fn redirect_to_login() {
+    let path = current_path();
+    if is_restorable(&path) {
+        if let Some(storage) = session_storage() {
+            let _ = storage.set_item(RETURN_TO_KEY, &path);
+        }
+    }
+    gloo_timers::callback::Timeout::new(0, move || {
+        // Several in-flight requests may fail at once; only the first
+        // takes us to the login page.
+        if current_path() != "/login" {
+            navigate_replace("/login");
+        }
+    })
+    .forget();
+}
+
+/// The page saved by [`redirect_to_login`], if any.
+pub fn saved_return_to() -> Option<String> {
+    let storage = session_storage()?;
+    let path = storage.get_item(RETURN_TO_KEY).ok().flatten()?;
+    is_restorable(&path).then_some(path)
+}
+
+/// Drop the saved page, e.g. after it has been restored.
+pub fn clear_return_to() {
+    if let Some(storage) = session_storage() {
+        let _ = storage.remove_item(RETURN_TO_KEY);
+    }
+}

web/src/components/briscola.rs

@@ -7,14 +7,16 @@
 use sycamore::prelude::*;
 
 use crate::components::card::{card_back, card_img};
-use crate::model::{is_individual_game, DealSummary, GameView};
+use crate::model::{card_label, is_chiamata, is_individual_game, DealSummary, GameView};
 use crate::ws::GameSocket;
 
-/// Names of the two sides: the players' names for games without
-/// partnerships (classic two-player briscola), "Team A"/"Team B"
-/// otherwise.
+/// Names of the two sides: the caller and partner for briscola chiamata,
+/// the players' names for games without partnerships (classic two-player
+/// briscola), "Team A"/"Team B" otherwise.
 fn side_names(game: &GameView) -> (String, String) {
-    if is_individual_game(&game.game_type) {
+    if is_chiamata(&game.game_type) {
+        game.chiamata_sides()
+    } else if is_individual_game(&game.game_type) {
         (
             game.player_name_for_team("A"),
             game.player_name_for_team("B"),
@@ -66,6 +68,25 @@ pub fn deal_rows(game: &GameView, summary: &DealSummary) -> View {
             "60–60: patta — the deal is replayed and its points do not count."
         }
     });
+    let called_row = if is_chiamata(&game.game_type) {
+        game.called_card.clone().map(|code| {
+            let label = card_label(&code);
+            let text = if game.solo {
+                format!("{name_a} called {label} in hand and plays alone.")
+            } else {
+                format!("{label}: its holder is the secret partner; its suit is trump.")
+            };
+            summary_row(
+                card_img(code, "score-mini"),
+                "Chiamata",
+                text,
+                "score-row chiamata-row",
+                label,
+            )
+        })
+    } else {
+        None
+    };
     let points_row = summary_row(
         card_img("01D".to_string(), "score-mini"),
         "Deal points",
@@ -84,6 +105,7 @@ pub fn deal_rows(game: &GameView, summary: &DealSummary) -> View {
     });
     view! {
         div(class="score-rows") {
+            (called_row)
             (points_row)
             (patta_note)
             (cards)
@@ -94,9 +116,13 @@ pub fn deal_rows(game: &GameView, summary: &DealSummary) -> View {
 /// Running totals with progress toward the target, including the points
 /// gained in the deal just played (zero for a patta).
 fn totals(game: &GameView, summary: &DealSummary) -> View {
+    // Briscola chiamata plays a single deal: there is no running total.
+    let Some(running) = summary.totals else {
+        return view! {};
+    };
     let target = game.target_score.max(1);
-    let pct_a = (100 * summary.totals.a / target).min(100);
-    let pct_b = (100 * summary.totals.b / target).min(100);
+    let pct_a = (100 * running.a / target).min(100);
+    let pct_b = (100 * running.b / target).min(100);
     let (gained_a, gained_b) = if summary.patta {
         (0, 0)
     } else {
@@ -111,7 +137,7 @@ fn totals(game: &GameView, summary: &DealSummary) -> View {
                     div(class="progress-fill", style=format!("width: {pct_a}%")) {}
                 }
                 span(class="total-value") {
-                    (summary.totals.a) " / " (target)
+                    (running.a) " / " (target)
                     span(class="gained") { "+" (gained_a) }
                 }
             }
@@ -121,7 +147,7 @@ fn totals(game: &GameView, summary: &DealSummary) -> View {
                     div(class="progress-fill", style=format!("width: {pct_b}%")) {}
                 }
                 span(class="total-value") {
-                    (summary.totals.b) " / " (target)
+                    (running.b) " / " (target)
                     span(class="gained") { "+" (gained_b) }
                 }
             }

web/src/components/login.rs

@@ -0,0 +1,70 @@
+//! Login card, shared by the lobby's logged-out state and the `/login`
+//! page.
+use sycamore::prelude::*;
+
+use crate::model::AuthProvider;
+
+/// Human-readable label for a provider name ("google" -> "Google").
+fn provider_label(name: &str) -> String {
+    let mut chars = name.chars();
+    match chars.next() {
+        Some(first) => first.to_uppercase().collect::<String>() + chars.as_str(),
+        None => String::new(),
+    }
+}
+
+/// Card offering one login button per configured provider.
+///
+/// `providers` is filled by the caller from `GET /api/auth/providers`;
+/// while it is empty (or the fetch failed) the card falls back to the
+/// generic `/auth/login` route, which redirects to the first configured
+/// provider.
+pub fn login_card(providers: Signal<Vec<AuthProvider>>) -> View {
+    view! {
+        div(class="status-card") {
+            div(class="card") {
+                div(class="card-body p-4") {
+                    h1(class="h3 mb-3") {
+                        span(class="text-warning") { "♠" }
+                        " tavolo"
+                    }
+                    p(class="text-secondary") { "Log in with your account to play." }
+                    // rel="external" opts out of the SPA router's click
+                    // interception: these must be full page navigations
+                    // to the backend's OIDC login endpoints.
+                    (move || {
+                        let providers = providers.get_clone();
+                        if providers.is_empty() {
+                            // Providers could not be fetched: the generic
+                            // route redirects to the first configured
+                            // provider.
+                            view! {
+                                a(
+                                    class="btn btn-warning btn-lg w-100",
+                                    href="/auth/login",
+                                    rel="external",
+                                ) {
+                                    "Log in"
+                                }
+                            }
+                        } else {
+                            view! {
+                                div(class="d-grid gap-2") {
+                                    (providers.iter().cloned().map(|p| view! {
+                                        a(
+                                            class="btn btn-warning btn-lg w-100",
+                                            href=p.login_url,
+                                            rel="external",
+                                        ) {
+                                            "Log in with " (provider_label(&p.name))
+                                        }
+                                    }).collect::<Vec<_>>())
+                                }
+                            }
+                        }
+                    })
+                }
+            }
+        }
+    }
+}

web/src/components/mod.rs

@@ -1,6 +1,7 @@
 pub mod briscola;
 pub mod card;
 pub mod copy;
+pub mod login;
 pub mod nav;
 pub mod summary;
 pub mod toast;

web/src/main.rs

@@ -1,22 +1,27 @@
 //! Application entry point.
 mod api;
+mod auth;
 mod components;
 mod model;
 mod pages;
 mod ws;
 
 use sycamore::prelude::*;
-use sycamore_router::{HistoryIntegration, Route, Router};
+use sycamore_router::{navigate, HistoryIntegration, Route, Router};
+use wasm_bindgen_futures::spawn_local;
 
 use pages::game::GamePage;
 use pages::history::HistoryPage;
 use pages::leaderboard::LeaderboardPage;
 use pages::lobby::LobbyPage;
+use pages::login::LoginPage;
 
 #[derive(Route, Clone)]
 enum AppRoutes {
     #[to("/")]
     Lobby,
+    #[to("/login")]
+    Login,
     #[to("/game/<id>")]
     Game { id: String },
     #[to("/history")]
@@ -27,6 +32,31 @@ enum AppRoutes {
     NotFound,
 }
 
+/// After the OIDC callback lands the SPA back on the configured
+/// post-login redirect, forward the user to the page they were on before
+/// being sent to the login page (see [`auth`]) — but only once a session
+/// exists, so a cancelled login never bounces into a stale page.
+fn restore_page_after_login() {
+    let Some(path) = auth::saved_return_to() else {
+        return;
+    };
+    spawn_local(async move {
+        match api::me().await {
+            Ok(Some(_)) => {
+                auth::clear_return_to();
+                if auth::current_path() != path {
+                    navigate(&path);
+                }
+            }
+            // Not logged in: keep the target for the next successful
+            // login (a reload of the login page must not lose it).
+            Ok(None) => {}
+            // The probe failed (offline?): keep the target, too.
+            Err(_) => {}
+        }
+    });
+}
+
 fn main() {
     console_error_panic_hook::set_once();
     sycamore::render(|| {
@@ -38,6 +68,7 @@ fn main() {
                         div(class="app") {
                             (match route.get_clone() {
                                 AppRoutes::Lobby => view! { LobbyPage() },
+                                AppRoutes::Login => view! { LoginPage() },
                                 AppRoutes::Game { id } => view! { GamePage(id=id) },
                                 AppRoutes::History => view! { HistoryPage() },
                                 AppRoutes::Leaderboard => view! { LeaderboardPage() },
@@ -60,4 +91,5 @@ fn main() {
             )
         }
     });
+    restore_page_after_login();
 }

web/src/model.rs

@@ -19,7 +19,10 @@ pub struct PlayerView {
     pub sub: String,
     pub name: String,
     pub seat: usize,
-    pub team: String,
+    /// Game-defined role/team label; empty before briscola chiamata
+    /// reveals the roles.
+    #[serde(default)]
+    pub team: Option<String>,
     #[serde(default)]
     pub cards_left: usize,
     #[serde(default)]
@@ -84,9 +87,21 @@ pub struct DealSummary {
     #[serde(default)]
     pub patta: bool,
     pub points: Scores,
-    pub totals: Scores,
+    /// Running match totals; absent for briscola chiamata, whose match is
+    /// a single deal.
+    #[serde(default)]
+    pub totals: Option<Scores>,
     #[serde(default)]
     pub cards: Option<TeamCounts>,
+    /// Briscola chiamata: the points target of the played deal.
+    #[serde(default)]
+    pub declared_target: Option<i32>,
+    /// Briscola chiamata: the card named by the caller.
+    #[serde(default)]
+    pub called_card: Option<String>,
+    /// Briscola chiamata: the caller played without a partner.
+    #[serde(default)]
+    pub solo: bool,
 }
 
 #[derive(Debug, Clone, Copy, Deserialize)]
@@ -227,6 +242,83 @@ pub struct GameView {
     /// Briscola: scoring breakdown of the most recent deal.
     #[serde(default)]
     pub last_deal: Option<DealSummary>,
+    /// Briscola chiamata: the calling auction of the current deal.
+    #[serde(default)]
+    pub auction: Option<AuctionView>,
+    /// Briscola chiamata: seat that won the auction.
+    #[serde(default)]
+    pub caller: Option<usize>,
+    /// Briscola chiamata: the named card; its suit is the trump.
+    #[serde(default)]
+    pub called_card: Option<String>,
+    /// Briscola chiamata: points the calling side must reach.
+    #[serde(default)]
+    pub declared_target: i32,
+    /// Briscola chiamata: the called card has been played; roles are
+    /// public from then on.
+    #[serde(default)]
+    pub called_played: bool,
+    /// Briscola chiamata: the partner's seat, once revealed.
+    #[serde(default)]
+    pub partner: Option<usize>,
+    /// Briscola chiamata: the caller named one of their own cards.
+    #[serde(default)]
+    pub solo: bool,
+    /// Briscola chiamata: legal bids for the player on turn.
+    #[serde(default)]
+    pub legal_bids: Option<LegalBids>,
+    /// Briscola chiamata: the cards the auction winner may name.
+    #[serde(default)]
+    pub callable_cards: Option<Vec<String>>,
+    /// Briscola chiamata: ISO-8601 deadline of the auction turn.
+    #[serde(default)]
+    pub auction_deadline: Option<String>,
+    /// Briscola chiamata: ISO-8601 deadline of the auction winner's call.
+    #[serde(default)]
+    pub call_deadline: Option<String>,
+}
+
+/// One bid of the briscola chiamata auction.
+#[derive(Debug, Clone, Deserialize)]
+#[allow(dead_code)]
+pub struct AuctionBid {
+    pub seat: usize,
+    /// Rank bid: 1 ace, 3 three, 10 king, ... 2 two.
+    pub rank: i32,
+    /// Points target the bid commits its side to.
+    #[serde(default)]
+    pub points: i32,
+}
+
+/// The briscola chiamata calling auction.
+#[derive(Debug, Clone, Deserialize)]
+#[allow(dead_code)]
+pub struct AuctionView {
+    /// Seat to act.
+    pub turn: usize,
+    #[serde(default)]
+    pub active: Vec<usize>,
+    #[serde(default)]
+    pub passed: Vec<usize>,
+    /// The standing bid, if any.
+    #[serde(default)]
+    pub current: Option<AuctionBid>,
+    #[serde(default)]
+    pub history: Vec<AuctionBid>,
+}
+
+/// The bids available to the player on turn.
+#[derive(Debug, Clone, Deserialize)]
+#[allow(dead_code)]
+pub struct LegalBids {
+    /// Ranks that may be bid, strongest first (empty at the point stage).
+    #[serde(default)]
+    pub ranks: Vec<i32>,
+    /// Lowest legal points raise, when the standing bid is the two.
+    #[serde(default)]
+    pub points_min: Option<i32>,
+    #[serde(default)]
+    pub points_max: Option<i32>,
 }
 
 impl GameView {
@@ -235,10 +327,38 @@ impl GameView {
     pub fn player_name_for_team(&self, team: &str) -> String {
         self.players
             .iter()
-            .find(|p| p.team == team)
+            .find(|p| p.team.as_deref() == Some(team))
             .map(|p| p.name.clone())
             .unwrap_or_else(|| team.to_string())
     }
+
+    /// Display name of the player in `seat`.
+    pub fn player_name_for_seat(&self, seat: usize) -> String {
+        self.players
+            .iter()
+            .find(|p| p.seat == seat)
+            .map(|p| p.name.clone())
+            .unwrap_or_else(|| format!("Seat {seat}"))
+    }
+
+    /// Side labels for briscola chiamata: the caller (with the partner's
+    /// name once revealed, or "(solo)") against the defenders.
+    pub fn chiamata_sides(&self) -> (String, String) {
+        let side_a = match self.caller {
+            Some(caller) => {
+                let caller_name = self.player_name_for_seat(caller);
+                match self.partner {
+                    Some(partner) => {
+                        format!("{caller_name} & {}", self.player_name_for_seat(partner))
+                    }
+                    None if self.called_played => format!("{caller_name} (solo)"),
+                    None => caller_name,
+                }
+            }
+            None => "Chiamante".to_string(),
+        };
+        (side_a, "Difensori".to_string())
+    }
 }
 
 #[derive(Debug, Deserialize)]
@@ -449,6 +569,14 @@ pub fn fallback_game_types() -> Vec<GameTypeInfo> {
             max_players: 4,
             options_schema: serde_json::Value::Null,
         },
+        GameTypeInfo {
+            id: "briscola_chiamata".to_string(),
+            name: "Briscola chiamata".to_string(),
+            description: String::new(),
+            min_players: 5,
+            max_players: 5,
+            options_schema: serde_json::Value::Null,
+        },
     ]
 }
 
@@ -735,6 +863,30 @@ pub fn is_briscola(game_type: &str) -> bool {
     game_type == "briscola" || game_type == "briscola_a_quattro"
 }
 
+/// Whether a game type is five-player briscola chiamata, which has its
+/// own table view (auction, secret partner, five seats).
+pub fn is_chiamata(game_type: &str) -> bool {
+    game_type == "briscola_chiamata"
+}
+
+/// The Italian rank name used by the auction UI: `1` -> "Asso", `3` ->
+/// "Tre", `10` -> "Re", and so on.
+pub fn rank_name(rank: i32) -> String {
+    match rank {
+        1 => "Asso".to_string(),
+        2 => "Due".to_string(),
+        3 => "Tre".to_string(),
+        4 => "Quattro".to_string(),
+        5 => "Cinque".to_string(),
+        6 => "Sei".to_string(),
+        7 => "Sette".to_string(),
+        8 => "Fante".to_string(),
+        9 => "Cavallo".to_string(),
+        10 => "Re".to_string(),
+        other => other.to_string(),
+    }
+}
+
 /// Whether a game is played by two individuals rather than partnerships
 /// (classic two-player briscola): team labels and team messages are
 /// replaced by the players' names.
@@ -1033,7 +1185,7 @@ mod tests {
         assert_eq!(16, g.target_score);
         assert!(!g.napola);
         assert!(g.asso_pigliatutto);
-        assert_eq!("A", g.players[0].team);
+        assert_eq!(Some("A".to_string()), g.players[0].team);
     }
 
     #[test]
@@ -1245,7 +1397,10 @@ mod tests {
     fn is_briscola_matches_both_variants() {
         assert!(is_briscola("briscola"));
         assert!(is_briscola("briscola_a_quattro"));
+        assert!(!is_briscola("briscola_chiamata"));
         assert!(!is_briscola("scopone_scientifico"));
+        assert!(is_chiamata("briscola_chiamata"));
+        assert!(!is_chiamata("briscola"));
         assert_eq!("denari", suit_name("D"));
         assert_eq!("coppe", suit_name("C"));
         assert_eq!("spade", suit_name("S"));
@@ -1253,6 +1408,16 @@ mod tests {
         assert_eq!("?", suit_name("?"));
     }
 
+    #[test]
+    fn rank_names_cover_the_ladder() {
+        assert_eq!("Asso", rank_name(1));
+        assert_eq!("Due", rank_name(2));
+        assert_eq!("Tre", rank_name(3));
+        assert_eq!("Fante", rank_name(8));
+        assert_eq!("Cavallo", rank_name(9));
+        assert_eq!("Re", rank_name(10));
+    }
+
     #[test]
     fn is_individual_game_only_matches_two_player_briscola() {
         assert!(is_individual_game("briscola"));
@@ -1318,11 +1483,17 @@ mod tests {
         let types = fallback_game_types();
         let ids: Vec<&str> = types.iter().map(|g| g.id.as_str()).collect();
         assert_eq!(
-            vec!["scopone_scientifico", "briscola", "briscola_a_quattro"],
+            vec![
+                "scopone_scientifico",
+                "briscola",
+                "briscola_a_quattro",
+                "briscola_chiamata",
+            ],
             ids
         );
         // The lobby's first game (the creation default) must exist.
         assert_eq!("scopone_scientifico", types[0].id);
+        assert_eq!(5, types[3].max_players);
     }
 
     #[test]
@@ -1400,7 +1571,7 @@ mod tests {
         assert_eq!(1, deal.deal);
         assert!(!deal.patta);
         assert_eq!(Scores { a: 55, b: 65 }, deal.points);
-        assert_eq!(Scores { a: 55, b: 65 }, deal.totals);
+        assert_eq!(Some(Scores { a: 55, b: 65 }), deal.totals);
         let cards = deal.cards.unwrap();
         assert_eq!(19, cards.a);
         assert_eq!(21, cards.b);
@@ -1420,4 +1591,137 @@ mod tests {
         assert_eq!(0, d.deal);
         assert!(d.cards.is_none());
     }
+
+    #[test]
+    fn chiamata_deal_summary_has_no_totals() {
+        let d: DealSummary = serde_json::from_value(json!({
+            "deal": 2,
+            "patta": true,
+            "points": {"A": 60, "B": 60},
+            "declared_target": 61,
+            "called_card": "01D",
+            "caller": "Alice",
+            "solo": false,
+        }))
+        .unwrap();
+        assert!(d.patta);
+        assert_eq!(2, d.deal);
+        assert!(d.totals.is_none());
+        assert!(d.cards.is_none());
+        assert_eq!(Some(61), d.declared_target);
+        assert_eq!(Some("01D".to_string()), d.called_card);
+        assert!(!d.solo);
+    }
+
+    #[test]
+    fn game_view_parses_chiamata_auction() {
+        let g: GameView = serde_json::from_value(json!({
+            "id": "c1",
+            "join_code": "ABC123",
+            "game_type": "briscola_chiamata",
+            "phase": "auction",
+            "player_count": 5,
+            "dealer": 0,
+            "hand_number": 1,
+            "turn": 1,
+            "declared_target": 61,
+            "auction": {
+                "turn": 2,
+                "active": [0, 1, 2, 3, 4],
+                "passed": [],
+                "current": {"seat": 1, "rank": 10, "points": 61},
+                "history": [{"seat": 1, "rank": 10, "points": 61}],
+            },
+            "your_turn": true,
+            "legal_bids": {"ranks": [9, 8, 7, 6, 5, 4, 2], "points_min": null, "points_max": 120},
+            "players": [
+                {"sub": "alice", "name": "Alice", "seat": 0, "team": "",
+                 "cards_left": 8, "captured_count": 0, "points": 0, "hand": ["01D"]},
+                {"sub": "bob", "name": "Bob", "seat": 1, "team": "Chiamante",
+                 "cards_left": 8, "captured_count": 0, "points": 0},
+            ],
+            "auction_deadline": "2026-01-01T00:00:30+00:00",
+            "call_deadline": null,
+            "turn_deadline": null,
+        }))
+        .unwrap();
+        assert!(is_chiamata(&g.game_type));
+        assert!(!is_briscola(&g.game_type));
+        let auction = g.auction.unwrap();
+        assert_eq!(2, auction.turn);
+        assert_eq!(5, auction.active.len());
+        let current = auction.current.unwrap();
+        assert_eq!(1, current.seat);
+        assert_eq!(10, current.rank);
+        assert_eq!(61, current.points);
+        assert_eq!(1, auction.history.len());
+        let bids = g.legal_bids.unwrap();
+        assert_eq!(vec![9, 8, 7, 6, 5, 4, 2], bids.ranks);
+        assert!(bids.points_min.is_none());
+        assert_eq!(Some(120), bids.points_max);
+        assert_eq!(Some("".to_string()), g.players[0].team);
+        assert_eq!(Some("Chiamante".to_string()), g.players[1].team);
+    }
+
+    #[test]
+    fn game_view_parses_chiamata_playing_and_reveal() {
+        let g: GameView = serde_json::from_value(json!({
+            "id": "c2",
+            "game_type": "briscola_chiamata",
+            "phase": "playing",
+            "player_count": 5,
+            "dealer": 0,
+            "hand_number": 1,
+            "turn": 3,
+            "caller": 1,
+            "called_card": "03C",
+            "briscola_suit": "C",
+            "declared_target": 64,
+            "called_played": true,
+            "partner": 3,
+            "solo": false,
+            "scores": {"A": 45, "B": 30},
+            "players": [
+                {"sub": "a", "name": "A", "seat": 0, "team": "Difensori"},
+                {"sub": "b", "name": "B", "seat": 1, "team": "Chiamante"},
+                {"sub": "c", "name": "C", "seat": 2, "team": "Difensori"},
+                {"sub": "d", "name": "D", "seat": 3, "team": "Socio"},
+                {"sub": "e", "name": "E", "seat": 4, "team": "Difensori"},
+            ],
+        }))
+        .unwrap();
+        assert_eq!(Some(1), g.caller);
+        assert_eq!(Some("03C".to_string()), g.called_card);
+        assert_eq!("C", g.briscola_suit);
+        assert_eq!(64, g.declared_target);
+        assert!(g.called_played);
+        assert_eq!(Some(3), g.partner);
+        assert!(!g.solo);
+        assert_eq!(Some(Scores { a: 45, b: 30 }), g.scores);
+        assert_eq!(("B & D".to_string(), "Difensori".to_string()), g.chiamata_sides());
+    }
+
+    #[test]
+    fn chiamata_sides_label_the_solo_caller() {
+        let g: GameView = serde_json::from_value(json!({
+            "id": "c3",
+            "game_type": "briscola_chiamata",
+            "phase": "finished",
+            "scores": {"A": 70, "B": 50},
+            "winner": "Chiamante",
+            "caller": 2,
+            "called_played": true,
+            "solo": true,
+            "players": [
+                {"sub": "a", "name": "Alice", "seat": 0, "team": "Difensori"},
+                {"sub": "b", "name": "Bob", "seat": 1, "team": "Difensori"},
+                {"sub": "c", "name": "Carol", "seat": 2, "team": "Chiamante"},
+            ],
+        }))
+        .unwrap();
+        let (a, b) = g.chiamata_sides();
+        assert_eq!("Carol (solo)", a);
+        assert_eq!("Difensori", b);
+        assert_eq!(Some("Chiamante".to_string()), g.winner);
+    }
 }

web/src/pages/briscola.rs

@@ -27,10 +27,11 @@ fn seat_panel(game: GameView, seat: usize, position: &'static str) -> View {
         if active { " active" } else { "" }
     );
     let name = player.name.clone();
-    let team_badge = (!is_individual_game(&game.game_type)).then(|| {
-        let team = player.team.clone();
-        view! { span(class="team-badge") { "Team " (team) } }
-    });
+    let team_badge = (!is_individual_game(&game.game_type))
+        .then(|| player.team.clone())
+        .flatten()
+        .filter(|team| !team.is_empty())
+        .map(|team| view! { span(class="team-badge") { "Team " (team) } });
     let points = player.points;
     let captured = player.captured_count;
     let backs = (0..player.cards_left)

web/src/pages/chiamata.rs

@@ -0,0 +1,529 @@
+//! Briscola chiamata table: five seats, the calling auction and the
+//! secret-partner reveal.
+//!
+//! The auction starts with the player after the dealer: each player bids
+//! a lower rank than the standing bid (A > 3 > K > H > J > 7 > 6 > 5 >
+//! 4 > 2) or passes, and once the standing bid is the two the bidding
+//! continues on points. The last bidder names a card of the won rank:
+//! its holder is the secret partner, or the caller plays alone when it
+//! is one of their own cards, and its suit is the trump. The partner's
+//! identity is only revealed when the called card is played.
+use sycamore::prelude::*;
+
+use crate::components::card::{card_back, card_img};
+use crate::components::copy::CopyButton;
+use crate::model::{
+    card_label, hand_sort_key, rank_name, suit_name, AuctionBid, GameView, PlayerView,
+};
+use crate::pages::game::watch_link;
+use crate::ws::GameSocket;
+
+fn player_for_seat(game: &GameView, seat: usize) -> Option<PlayerView> {
+    game.players.iter().find(|p| p.seat == seat).cloned()
+}
+
+fn player_name(game: &GameView, seat: usize) -> String {
+    player_for_seat(game, seat)
+        .map(|p| p.name)
+        .unwrap_or_else(|| format!("Seat {seat}"))
+}
+
+/// Human label of one auction bid.
+fn bid_label(bid: &AuctionBid) -> String {
+    if bid.rank == 2 {
+        format!("2 at {} pts", bid.points)
+    } else {
+        rank_name(bid.rank)
+    }
+}
+
+/// Panel for one player seat (name, revealed role, hidden cards, points).
+fn seat_panel(game: GameView, seat: usize, position: &'static str) -> View {
+    let Some(player) = player_for_seat(&game, seat) else {
+        return view! {};
+    };
+    let active = game.phase == "playing" && game.turn == seat;
+    let cls = format!(
+        "seat seat-{position}{}",
+        if active { " active" } else { "" }
+    );
+    let name = player.name.clone();
+    // Role labels only appear once the server makes them public.
+    let role_badge = player
+        .team
+        .clone()
+        .filter(|role| !role.is_empty())
+        .map(|role| view! { span(class="team-badge role-badge") { (role) } });
+    let points = player.points;
+    let captured = player.captured_count;
+    let backs = (0..player.cards_left)
+        .map(|_| card_back("mini"))
+        .collect::<Vec<_>>();
+    view! {
+        div(class=cls) {
+            div(class="seat-name") {
+                (name)
+                (role_badge)
+            }
+            div(class="seat-cards") { (backs) }
+            div(class="seat-stats") {
+                (points) " points · " (captured) " cards"
+            }
+        }
+    }
+}
+
+/// The cards of the trick in progress, in play order, with player names.
+fn trick_view(game: &GameView) -> View {
+    if game.trick.is_empty() {
+        return view! { p(class="table-empty") { "Empty table" } };
+    }
+    let cards = game
+        .trick
+        .iter()
+        .map(|tc| {
+            let name = player_name(game, tc.seat);
+            let card = card_img(tc.card.clone(), "table-card");
+            view! {
+                div(class="trick-slot") {
+                    span(class="trick-name") { (name) }
+                    (card)
+                }
+            }
+        })
+        .collect::<Vec<_>>();
+    view! { (cards) }
+}
+
+/// Announcement strip for the most recently completed trick.
+fn last_trick_banner(game: &GameView) -> View {
+    let Some(trick) = game.last_trick.clone() else {
+        return view! {};
+    };
+    let name = player_name(game, trick.winner);
+    let cards = trick
+        .cards
+        .iter()
+        .map(|tc| card_img(tc.card.clone(), "move-card"))
+        .collect::<Vec<_>>();
+    view! {
+        div(class="move-banner") {
+            strong { (name) }
+            span { " takes the trick " }
+            (cards)
+        }
+    }
+}
+
+/// "Patta — the deal is replayed" after a 60-60 deal.
+fn patta_banner(game: &GameView) -> View {
+    let patta = game
+        .last_deal
+        .as_ref()
+        .is_some_and(|deal| deal.patta);
+    if !patta || game.phase != "auction" {
+        return view! {};
+    }
+    view! {
+        div(class="move-banner patta-banner") {
+            strong { "Patta!" }
+            span { " 60–60 — the deal is replayed." }
+        }
+    }
+}
+
+/// Announcement of the partner (or the solo caller) once the called card
+/// has hit the table.
+fn reveal_banner(game: &GameView) -> View {
+    if !game.called_played || game.phase == "auction" || game.phase == "calling" {
+        return view! {};
+    }
+    let caller = game
+        .caller
+        .map(|seat| player_name(game, seat))
+        .unwrap_or_default();
+    let text = if game.solo {
+        format!("{caller} is playing alone")
+    } else {
+        let partner = game
+            .partner
+            .map(|seat| player_name(game, seat))
+            .unwrap_or_default();
+        format!("{partner} is the partner of {caller}")
+    };
+    view! {
+        div(class="move-banner reveal-banner") {
+            span(class="reveal-text") { (text) }
+        }
+    }
+}
+
+/// The calling auction panel: standing bid, trail and, on turn, the bids.
+fn auction_panel(
+    game: &GameView,
+    on_bid_rank: impl Fn(i32) + Copy + 'static,
+    on_bid_points: impl Fn(i32) + Copy + 'static,
+    on_pass: impl Fn() + Copy + 'static,
+) -> View {
+    let Some(auction) = game.auction.clone() else {
+        return view! {};
+    };
+    let standing = match &auction.current {
+        Some(bid) => format!(
+            "Standing bid: {} — {}",
+            player_name(game, bid.seat),
+            bid_label(bid)
+        ),
+        None => "No bids yet".to_string(),
+    };
+    let waiting_for = player_name(game, auction.turn);
+    let history = auction
+        .history
+        .iter()
+        .map(|bid| {
+            let text = format!("{}: {}", player_name(game, bid.seat), bid_label(bid));
+            view! { span(class="auction-chip") { (text) } }
+        })
+        .collect::<Vec<_>>();
+
+    let actions = if game.your_turn == Some(true) {
+        let legal = game.legal_bids.clone();
+        let (rank_buttons, point_buttons) = match legal {
+            Some(bids) => {
+                let ranks = bids
+                    .ranks
+                    .iter()
+                    .map(|rank| {
+                        let rank = *rank;
+                        let name = rank_name(rank);
+                        view! {
+                            button(
+                                class="bid-button",
+                                on:click=move |_| on_bid_rank(rank),
+                            ) { (name) }
+                        }
+                    })
+                    .collect::<Vec<_>>();
+                let points = match (bids.points_min, bids.points_max) {
+                    (Some(min), Some(max)) => (0..=2)
+                        .map(|step| min + 2 * step)
+                        .filter(|points| *points <= max)
+                        .map(|points| {
+                            view! {
+                                button(
+                                    class="bid-button points",
+                                    on:click=move |_| on_bid_points(points),
+                                ) { (points) " pts" }
+                            }
+                        })
+                        .collect::<Vec<_>>(),
+                    _ => Vec::new(),
+                };
+                (ranks, points)
+            }
+            None => (Vec::new(), Vec::new()),
+        };
+        view! {
+            div(class="bid-options") {
+                (rank_buttons)
+                (point_buttons)
+                button(class="pass-button", on:click=move |_| on_pass()) { "Pass" }
+            }
+        }
+    } else {
+        view! {
+            p(class="text-secondary small mb-0") {
+                "Waiting for " (waiting_for) " to bid…"
+            }
+        }
+    };
+
+    view! {
+        div(class="auction-panel") {
+            div(class="auction-standing") { (standing) }
+            div(class="auction-history") { (history) }
+            (actions)
+        }
+    }
+}
+
+/// The main briscola chiamata table.
+pub fn chiamata_table(
+    game: GameView,
+    on_hand_card: impl Fn(String) + Copy + 'static,
+    on_bid_rank: impl Fn(i32) + Copy + 'static,
+    on_bid_points: impl Fn(i32) + Copy + 'static,
+    on_pass: impl Fn() + Copy + 'static,
+    now: Signal<f64>,
+) -> View {
+    // Own seat: the only player entry carrying a hand. Spectators have no
+    // hand, so they watch from seat 0's perspective.
+    let viewer_seat = game
+        .players
+        .iter()
+        .find(|p| p.hand.is_some())
+        .map(|p| p.seat)
+        .unwrap_or(0);
+    let my_turn = game.your_turn == Some(true);
+    let can_play = game.phase == "playing" && my_turn;
+
+    let turn_note = if game.phase == "finished" {
+        "Match finished".to_string()
+    } else if game.phase == "auction" {
+        if my_turn {
+            "Your bid".to_string()
+        } else {
+            let name = game
+                .auction
+                .as_ref()
+                .map(|a| player_name(&game, a.turn))
+                .unwrap_or_default();
+            format!("{name} to bid")
+        }
+    } else if game.phase == "calling" {
+        if my_turn {
+            "Name the called card".to_string()
+        } else {
+            let name = game
+                .caller
+                .map(|seat| player_name(&game, seat))
+                .unwrap_or_default();
+            format!("{name} is calling")
+        }
+    } else if my_turn {
+        "Your turn".to_string()
+    } else {
+        format!("{}'s turn", player_name(&game, game.turn))
+    };
+    let turn_cls = if my_turn { "turn-note you" } else { "turn-note" };
+
+    let deadline = if game.phase == "auction" {
+        game.auction_deadline.clone()
+    } else if game.phase == "calling" {
+        game.call_deadline.clone()
+    } else {
+        game.turn_deadline.clone()
+    };
+    let countdown = deadline.map(|deadline| {
+        // A dynamic closure so only the ticking number re-renders.
+        let deadline_ms = js_sys::Date::parse(&deadline);
+        view! {
+            span(class="turn-timer") {
+                "Auto in "
+                (move || {
+                    ((deadline_ms - now.get_clone()) / 1000.0).ceil().max(0.0) as i32
+                })
+                "s"
+            }
+        }
+    });
+
+    let score_line = match game.scores {
+        Some(scores) => {
+            let (side_a, side_b) = game.chiamata_sides();
+            format!(
+                "{side_a} {} — {} {side_b} (target {})",
+                scores.a, scores.b, game.declared_target
+            )
+        }
+        // Before the called card is played the side totals would leak the
+        // partner's identity; only the target is shown.
+        None => format!("Target {}", game.declared_target),
+    };
+
+    // Four opponents around the table: next player on the left, then
+    // clockwise up to the player before us on the right.
+    let left = seat_panel(game.clone(), (viewer_seat + 1) % 5, "left");
+    let top_left = seat_panel(game.clone(), (viewer_seat + 2) % 5, "tl");
+    let top_right = seat_panel(game.clone(), (viewer_seat + 3) % 5, "tr");
+    let right = seat_panel(game.clone(), (viewer_seat + 4) % 5, "right");
+
+    let patta = patta_banner(&game);
+    let reveal = reveal_banner(&game);
+    let center_content = match game.phase.as_str() {
+        "auction" => auction_panel(&game, on_bid_rank, on_bid_points, on_pass),
+        "calling" => {
+            let caller = game
+                .caller
+                .map(|seat| player_name(&game, seat))
+                .unwrap_or_default();
+            view! {
+                div(class="auction-panel") {
+                    div(class="auction-standing") { (caller) " won the auction" }
+                    p(class="text-secondary small mb-0") {
+                        "Choosing the called card…"
+                    }
+                }
+            }
+        }
+        _ => {
+            let banner = last_trick_banner(&game);
+            let trick = trick_view(&game);
+            view! {
+                (banner)
+                div(class="table-cards") { (trick) }
+            }
+        }
+    };
+
+    let viewer = player_for_seat(&game, viewer_seat);
+    let my_points = viewer.as_ref().map(|p| p.points).unwrap_or(0);
+    let mut hand = viewer.and_then(|p| p.hand).unwrap_or_default();
+    hand.sort_by_key(|c| hand_sort_key(c));
+    let hand_cards = hand
+        .into_iter()
+        .map(|code| {
+            let card_view = card_img(code.clone(), "hand-card");
+            let click_code = code.clone();
+            view! {
+                button(class="hand-slot", on:click=move |_| {
+                    if can_play {
+                        on_hand_card(click_code.clone());
+                    }
+                }) { (card_view) }
+            }
+        })
+        .collect::<Vec<_>>();
+    let hint = if can_play {
+        Some(view! {
+            p(class="text-secondary small text-center") {
+                "Click a card to play it."
+            }
+        })
+    } else if game.phase == "auction" {
+        Some(view! {
+            p(class="text-secondary small text-center") {
+                "Bid or pass, then play the cards."
+            }
+        })
+    } else if game.phase == "calling" && my_turn {
+        Some(view! {
+            p(class="text-secondary small text-center") {
+                "Name a card: its holder will be your secret partner."
+            }
+        })
+    } else {
+        None
+    };
+
+    // Spectators have no hand: render the pivot seat as a regular panel so
+    // its points stay visible where the hand would be.
+    let bottom = if game.spectator {
+        seat_panel(game.clone(), viewer_seat, "bottom")
+    } else {
+        view! {
+            div(class="seat-bottom") {
+                div(class="seat-stats own-stats") { (my_points) " points" }
+                div(class="hand") { (hand_cards) }
+                (hint)
+            }
+        }
+    };
+
+    let spectator_badge = game.spectator.then(|| view! {
+        span(class="spectator-badge") { "Spectating" }
+    });
+    let watch_link = watch_link(&game.id);
+    let trump_badge = (!game.briscola_suit.is_empty()).then(|| {
+        let suit = suit_name(&game.briscola_suit);
+        view! { span(class="briscola-badge") { "Briscola: " (suit) } }
+    });
+    let called_badge = game.called_card.clone().map(|code| {
+        let label = card_label(&code);
+        view! { span(class="called-badge") { "Chiamata: " (label) } }
+    });
+    let deal = game.hand_number;
+
+    view! {
+        div(class="table-wrap") {
+            div(class="hud") {
+                a(href="/") { "← Lobby" }
+                span { "Deal " (deal) }
+                (trump_badge)
+                (called_badge)
+                (spectator_badge)
+                span(class="hud-scores") { (score_line) }
+                span(class=turn_cls) { (turn_note) }
+                (countdown)
+                CopyButton(text=watch_link, label="Copy watch link".to_string())
+            }
+            div(class="table-grid cinque") {
+                (top_left)
+                (top_right)
+                (left)
+                div(class="center") {
+                    (patta)
+                    (reveal)
+                    (center_content)
+                }
+                (right)
+                (bottom)
+            }
+        }
+    }
+}
+
+/// Overlay for the auction winner: name the called card.
+///
+/// The winning bid fixes the rank, so the choice is which of the four
+/// suits to call: its holder becomes the secret partner, unless the
+/// caller holds it too — then that option means playing alone.
+pub fn call_picker(game: GameView, socket: Signal<Option<GameSocket>>) -> View {
+    let Some(cards) = game.callable_cards.clone().filter(|cards| !cards.is_empty()) else {
+        return view! {};
+    };
+    let rank = cards
+        .first()
+        .and_then(|code| code.get(..2))
+        .and_then(|rank| rank.parse::<i32>().ok())
+        .map(rank_name)
+        .unwrap_or_default();
+    let title = if rank.is_empty() {
+        "Name the called card".to_string()
+    } else {
+        format!("You won with the {rank} — name the card")
+    };
+    let own_hand = game
+        .players
+        .iter()
+        .find(|p| p.hand.is_some())
+        .and_then(|p| p.hand.clone())
+        .unwrap_or_default();
+    let options = cards
+        .into_iter()
+        .map(|code| {
+            let held = own_hand.contains(&code);
+            let label = card_label(&code);
+            let img = card_img(code.clone(), "call-card");
+            let note = if held {
+                view! { span(class="call-note solo") { "Plays alone" } }
+            } else {
+                view! { span(class="call-note partner") { "Partner" } }
+            };
+            let click_code = code.clone();
+            view! {
+                button(class="call-option", on:click=move |_| {
+                    if let Some(s) = socket.get_clone() {
+                        s.call_card(&click_code);
+                    }
+                }) {
+                    (img)
+                    span(class="call-label") { (label) }
+                    (note)
+                }
+            }
+        })
+        .collect::<Vec<_>>();
+    view! {
+        div(class="overlay") {
+            div(class="picker call-picker") {
+                h3 { (title) }
+                p(class="text-secondary small") {
+                    "Its holder becomes your secret partner; name one of your "
+                    "own cards to play alone."
+                }
+                div(class="call-options") { (options) }
+            }
+        }
+    }
+}

web/src/pages/game.rs

@@ -12,10 +12,11 @@ use crate::components::copy::CopyButton;
 use crate::components::summary::{hand_summary_modal, summary_rows};
 use crate::components::toast::toast;
 use crate::model::{
-    card_label, hand_sort_key, is_briscola, is_individual_game, GameView, MoveView,
+    card_label, hand_sort_key, is_briscola, is_chiamata, is_individual_game, GameView, MoveView,
     PlayerView, Scores, ServerMessage,
 };
 use crate::pages::briscola::briscola_table;
+use crate::pages::chiamata::{call_picker, chiamata_table};
 use crate::ws::{self, GameSocket};
 
 fn send_play(socket: Signal<Option<GameSocket>>, card: String, capture: Option<Vec<String>>) {
@@ -43,7 +44,7 @@ fn seat_panel(game: GameView, seat: usize, position: &'static str) -> View {
         if active { " active" } else { "" }
     );
     let name = player.name.clone();
-    let team = player.team.clone();
+    let team = player.team.clone().unwrap_or_default();
     let captured = player.captured_count;
     let scope = player.scope;
     let backs = (0..player.cards_left)
@@ -324,6 +325,32 @@ pub fn GamePage(id: String) -> View {
         }
     };
 
+    // Briscola chiamata: auction and call actions.
+    let on_bid_rank = move |rank: i32| {
+        if closed.get() || game.get_clone().and_then(|g| g.your_turn) != Some(true) {
+            return;
+        }
+        if let Some(s) = socket.get_clone() {
+            s.bid_rank(rank);
+        }
+    };
+    let on_bid_points = move |points: i32| {
+        if closed.get() || game.get_clone().and_then(|g| g.your_turn) != Some(true) {
+            return;
+        }
+        if let Some(s) = socket.get_clone() {
+            s.bid_points(points);
+        }
+    };
+    let on_pass = move || {
+        if closed.get() || game.get_clone().and_then(|g| g.your_turn) != Some(true) {
+            return;
+        }
+        if let Some(s) = socket.get_clone() {
+            s.pass();
+        }
+    };
+
     let reconnect_banner = reconnect.clone();
     view! {
         div(class="game-page") {
@@ -392,6 +419,11 @@ pub fn GamePage(id: String) -> View {
                     }
                 }
                 Some(g) if g.phase == "lobby" => view! { LobbyView(game=g) },
+                // Briscola chiamata has its own five-seat table with the
+                // calling auction and the secret-partner reveal.
+                Some(g) if is_chiamata(&g.game_type) => {
+                    chiamata_table(g, on_hand_card, on_bid_rank, on_bid_points, on_pass, now)
+                }
                 // Briscola has its own table view for both variants.
                 Some(g) if is_briscola(&g.game_type) => {
                     briscola_table(g, on_hand_card, now)
@@ -406,6 +438,17 @@ pub fn GamePage(id: String) -> View {
             (move || capture_choice.get_clone().map(|(card, options)| {
                 capture_picker(card, options, socket, capture_choice)
             }))
+            // Briscola chiamata: the auction winner names the called card.
+            (move || match game.get_clone() {
+                Some(g)
+                    if is_chiamata(&g.game_type)
+                        && g.phase == "calling"
+                        && g.your_turn == Some(true) =>
+                {
+                    call_picker(g, socket)
+                }
+                _ => view! {},
+            })
             (move || match game.get_clone() {
                 Some(g) if g.phase == "hand_end" && g.game_type == "scopone_scientifico" => {
                     hand_summary_modal(g, socket, now)
@@ -440,10 +483,11 @@ fn LobbyView(game: GameView) -> View {
         .map(|p| {
             let name = p.name.clone();
             let seat = p.seat;
-            let team_badge = show_teams.then(|| {
-                let team = p.team.clone();
-                view! { span(class="badge text-bg-info") { "Team " (team) } }
-            });
+            let team_badge = show_teams
+                .then(|| p.team.clone())
+                .flatten()
+                .filter(|team| !team.is_empty())
+                .map(|team| view! { span(class="badge text-bg-info") { "Team " (team) } });
             view! {
                 li(class="list-group-item d-flex justify-content-between align-items-center") {
                     strong { (name) }
@@ -734,8 +778,9 @@ fn capture_picker(
 /// End-of-match overlay: the final hand/deal breakdown and the winner.
 fn game_over_view(over: Option<(Scores, Option<String>)>, game: Option<GameView>) -> View {
     let briscola = game.as_ref().is_some_and(|g| is_briscola(&g.game_type));
+    let chiamata = game.as_ref().is_some_and(|g| is_chiamata(&g.game_type));
     if let Some(g) = &game {
-        if g.game_type != "scopone_scientifico" && !briscola {
+        if g.game_type != "scopone_scientifico" && !briscola && !chiamata {
             return view! {};
         }
     }
@@ -749,18 +794,20 @@ fn game_over_view(over: Option<(Scores, Option<String>)>, game: Option<GameView>
         Some((scores, winner)) => {
             let winner = winner.unwrap_or_else(|| "?".to_string());
             // Two-player briscola has no teams: name the winner instead.
+            // Briscola chiamata names the caller's side (or the defenders).
             let winner_label = match game.as_ref() {
                 Some(g) if is_individual_game(&g.game_type) => {
                     g.player_name_for_team(&winner)
                 }
+                Some(g) if is_chiamata(&g.game_type) => winner.clone(),
                 _ => format!("Team {winner}"),
             };
             let line = format!("{winner_label} wins {} – {}", scores.a, scores.b);
             // Spectators have no match history to look at.
             let spectator = game.as_ref().is_some_and(|g| g.spectator);
-            // Explain the final hand's (scopone) or deal's (briscola)
-            // scoring before the result.
-            let final_summary: View = if briscola {
+            // Explain the final hand's (scopone) or deal's (briscola,
+            // briscola chiamata) scoring before the result.
+            let final_summary: View = if briscola || chiamata {
                 match game.as_ref() {
                     Some(g) => match g.last_deal.clone() {
                         Some(deal) => deal_rows(g, &deal),

web/src/pages/history.rs

@@ -12,34 +12,58 @@ use crate::api;
 use crate::components::toast::toast;
 use crate::model::{GameTypeInfo, MatchSummary, MatchesPage};
 
-/// Distinct team labels in seat order; players without a team render in
-/// a shared "Players" column.
-fn team_columns(m: &MatchSummary) -> Vec<Option<String>> {
-    let mut teams = BTreeSet::new();
+/// The match's teams, each as a `(label, names)` pair, in a readable
+/// order: briscola chiamata's roles first (Chiamante, Socio, Difensori),
+/// then other team labels alphabetically (A, B, ...), with team-less
+/// players last.
+fn team_groups(m: &MatchSummary) -> Vec<(String, String)> {
+    let mut labels: BTreeSet<Option<String>> = BTreeSet::new();
     for p in &m.players {
-        teams.insert(p.team.clone());
+        labels.insert(p.team.clone());
     }
-    let mut ordered: Vec<Option<String>> = teams.into_iter().collect();
-    // Seated teams first (in first-seat order), then the team-less column.
-    ordered.sort_by_key(|t| match t {
-        Some(_) => (0, String::new()),
-        None => (1, String::new()),
-    });
+    let mut ordered: Vec<Option<String>> = labels.into_iter().collect();
+    ordered.sort_by_key(team_sort_key);
     ordered
+        .into_iter()
+        .map(|label| (team_header(&label), team_names(m, &label)))
+        .collect()
+}
+
+/// Sort key for team labels: chiamata roles in play order, other labels
+/// alphabetically, team-less players last.
+fn team_sort_key(label: &Option<String>) -> (u8, String) {
+    match label.as_deref() {
+        Some("Chiamante") => (0, String::new()),
+        Some("Socio") => (1, String::new()),
+        Some("Difensori") => (2, String::new()),
+        Some(other) => (0, other.to_string()),
+        None => (9, String::new()),
+    }
 }
 
 fn team_names(m: &MatchSummary, team: &Option<String>) -> String {
-    m.players
+    let names = m
+        .players
         .iter()
         .filter(|p| &p.team == team)
         .map(|p| p.display_name.clone())
-        .collect::<Vec<_>>()
-        .join(" & ")
+        .collect::<Vec<_>>();
+    match names.len() {
+        0 => String::new(),
+        1 => names[0].clone(),
+        _ => {
+            let (last, rest) = names.split_last().expect("non-empty");
+            format!("{} & {}", rest.join(", "), last)
+        }
+    }
 }
 
 fn team_header(team: &Option<String>) -> String {
     match team {
-        Some(t) => format!("Team {t}"),
+        // Single-letter labels are the A/B team names; longer labels
+        // (e.g. briscola chiamata's "Chiamante"/"Socio") read on their own.
+        Some(t) if t.len() <= 2 => format!("Team {t}"),
+        Some(t) => t.clone(),
         None => "Players".to_string(),
     }
 }
@@ -55,7 +79,11 @@ fn score_text(m: &MatchSummary) -> String {
 /// "Team A" from `winner_team`, a plain `winner`, or "—".
 fn winner_text(m: &MatchSummary) -> String {
     if let Some(team) = m.result_str("winner_team") {
-        return format!("Team {team}");
+        return if team.len() <= 2 {
+            format!("Team {team}")
+        } else {
+            team
+        };
     }
     m.result_str("winner").unwrap_or_else(|| "—".to_string())
 }
@@ -98,18 +126,29 @@ pub fn HistoryPage() -> View {
         spawn_local(async move {
             match api::my_matches(next.as_deref()).await {
                 Ok(p) => {
+                    // The page can unmount (e.g. the login redirect) while
+                    // the request is in flight.
+                    if !page.is_alive() {
+                        return;
+                    }
                     cursor.set(p.next_cursor.clone());
                     rows.update(|acc| acc.extend(p.results.iter().cloned()));
                     page.set(Some(p));
                 }
-                Err(e) => error.set(Some(e)),
+                Err(e) => {
+                    if error.is_alive() {
+                        error.set(Some(e));
+                    }
+                }
             }
         });
     };
 
     spawn_local(async move {
         if let Ok(types) = api::game_types().await {
-            game_types.set(types);
+            if game_types.is_alive() {
+                game_types.set(types);
+            }
         }
     });
 
@@ -117,11 +156,18 @@ pub fn HistoryPage() -> View {
     spawn_local(async move {
         match api::my_matches(None).await {
             Ok(p) => {
+                if !page.is_alive() {
+                    return;
+                }
                 cursor.set(p.next_cursor.clone());
                 rows.set(p.results.clone());
                 page.set(Some(p));
             }
-            Err(e) => error.set(Some(e)),
+            Err(e) => {
+                if error.is_alive() {
+                    error.set(Some(e));
+                }
+            }
         }
     });
 
@@ -150,10 +196,18 @@ pub fn HistoryPage() -> View {
                             .map(|m| {
                                 let finished = local_finished(&m.finished_at);
                                 let game = game_name(&names, &m.game_type);
-                                let mut cells: Vec<View> = team_columns(&m)
-                                    .iter()
-                                    .map(|t| team_names(&m, t))
-                                    .map(|c| view! { td { (c) } })
+                                let teams: Vec<View> = team_groups(&m)
+                                    .into_iter()
+                                    .map(|(label, names)| {
+                                        view! {
+                                            div(class="match-team") {
+                                                span(class="text-secondary") {
+                                                    (label) ": "
+                                                }
+                                                (names)
+                                            }
+                                        }
+                                    })
                                     .collect();
                                 let score = score_text(&m);
                                 let winner = winner_text(&m);
@@ -173,37 +227,18 @@ pub fn HistoryPage() -> View {
                                 } else {
                                     "text-secondary"
                                 };
-                                let mut row_cells = vec![
+                                let row_cells = vec![
                                     view! { td { (finished) } },
                                     view! { td { (game) } },
+                                    view! { td { (teams) } },
+                                    view! { td { (score) } },
+                                    view! { td { (winner) } },
+                                    view! { td(class=cls) { (outcome) } },
+                                    view! { td(class=cls) { (elo_delta) } },
                                 ];
-                                row_cells.append(&mut cells);
-                                row_cells.push(view! { td { (score) } });
-                                row_cells.push(view! { td { (winner) } });
-                                row_cells.push(view! { td(class=cls) { (outcome) } });
-                                row_cells.push(view! { td(class=cls) { (elo_delta) } });
                                 view! { tr { (row_cells) } }
                             })
                             .collect::<Vec<_>>();
-                        // Team columns are per-row (matches may mix games), so
-                        // the header shows the union across the loaded rows.
-                        let mut header_teams = BTreeSet::new();
-                        for m in rows.get_clone().iter() {
-                            for t in team_columns(m) {
-                                header_teams.insert(t);
-                            }
-                        }
-                        let mut header_teams: Vec<Option<String>> =
-                            header_teams.into_iter().collect();
-                        header_teams.sort_by_key(|t| match t {
-                            Some(_) => (0, String::new()),
-                            None => (1, String::new()),
-                        });
-                        let header_cells: Vec<View> = header_teams
-                            .iter()
-                            .map(team_header)
-                            .map(|h| view! { th { (h) } })
-                            .collect();
                         view! {
                             div(class="table-responsive") {
                                 table(class="table table-striped table-hover align-middle") {
@@ -211,7 +246,7 @@ pub fn HistoryPage() -> View {
                                         tr {
                                             th { "Finished" }
                                             th { "Game" }
-                                            (header_cells)
+                                            th { "Teams" }
                                             th { "Score" }
                                             th { "Winner" }
                                             th { "You" }
@@ -236,3 +271,96 @@ pub fn HistoryPage() -> View {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+
+    fn match_summary(players: serde_json::Value) -> MatchSummary {
+        serde_json::from_value(json!({
+            "id": "m1",
+            "started_at": "2026-01-01T00:00:00+00:00",
+            "finished_at": "2026-01-01T01:00:00+00:00",
+            "players": players,
+        }))
+        .unwrap()
+    }
+
+    #[test]
+    fn team_groups_order_chiamata_roles() {
+        let m = match_summary(json!([
+            {"user_sub": "a", "display_name": "Alice", "seat": 0,
+             "team": "Difensori", "won": false},
+            {"user_sub": "b", "display_name": "Bob", "seat": 1,
+             "team": "Chiamante", "won": true},
+            {"user_sub": "c", "display_name": "Carol", "seat": 2,
+             "team": "Difensori", "won": false},
+            {"user_sub": "d", "display_name": "Dave", "seat": 3,
+             "team": "Socio", "won": true},
+            {"user_sub": "e", "display_name": "Erin", "seat": 4,
+             "team": "Difensori", "won": false},
+        ]));
+        assert_eq!(
+            vec![
+                ("Chiamante".to_string(), "Bob".to_string()),
+                ("Socio".to_string(), "Dave".to_string()),
+                (
+                    "Difensori".to_string(),
+                    "Alice, Carol & Erin".to_string()
+                ),
+            ],
+            team_groups(&m)
+        );
+    }
+
+    #[test]
+    fn team_groups_keep_a_and_b_in_order() {
+        let m = match_summary(json!([
+            {"user_sub": "a", "display_name": "Alice", "seat": 0,
+             "team": "A", "won": true},
+            {"user_sub": "b", "display_name": "Bob", "seat": 1,
+             "team": "B", "won": false},
+        ]));
+        assert_eq!(
+            vec![
+                ("Team A".to_string(), "Alice".to_string()),
+                ("Team B".to_string(), "Bob".to_string()),
+            ],
+            team_groups(&m)
+        );
+    }
+
+    #[test]
+    fn team_groups_put_teamless_players_last() {
+        let m = match_summary(json!([
+            {"user_sub": "a", "display_name": "Alice", "seat": 0,
+             "team": null, "won": false},
+            {"user_sub": "b", "display_name": "Bob", "seat": 1,
+             "team": "A", "won": true},
+        ]));
+        assert_eq!(
+            vec![
+                ("Team A".to_string(), "Bob".to_string()),
+                ("Players".to_string(), "Alice".to_string()),
+            ],
+            team_groups(&m)
+        );
+    }
+
+    #[test]
+    fn team_names_join_three_names_readably() {
+        let m = match_summary(json!([
+            {"user_sub": "a", "display_name": "Alice", "seat": 0,
+             "team": "A", "won": true},
+            {"user_sub": "b", "display_name": "Bob", "seat": 1,
+             "team": "A", "won": true},
+            {"user_sub": "c", "display_name": "Carol", "seat": 2,
+             "team": "A", "won": true},
+        ]));
+        assert_eq!(
+            "Alice, Bob & Carol",
+            team_names(&m, &Some("A".to_string()))
+        );
+    }
+}

web/src/pages/lobby.rs

@@ -13,21 +13,13 @@ use sycamore_router::navigate;
 
 use crate::api;
 use crate::components::card::card_back;
+use crate::components::login::login_card;
 use crate::components::toast::toast;
 use crate::model::{
     fallback_game_types, is_individual_game, AuthProvider, GameTypeInfo, JoinPreview,
     MyGame, OptionField, OptionKind, PlayerRating, User,
 };
 
-/// Human-readable label for a provider name ("google" -> "Google").
-fn provider_label(name: &str) -> String {
-    let mut chars = name.chars();
-    match chars.next() {
-        Some(first) => first.to_uppercase().collect::<String>() + chars.as_str(),
-        None => String::new(),
-    }
-}
-
 fn json_to_string(value: &serde_json::Value) -> String {
     match value {
         serde_json::Value::String(s) => s.clone(),
@@ -386,18 +378,30 @@ pub fn LobbyPage() -> View {
                 if me.is_some() {
                     spawn_local(async move {
                         if let Ok(p) = api::my_ratings().await {
-                            ratings.set(p.results);
+                            if ratings.is_alive() {
+                                ratings.set(p.results);
+                            }
                         }
                         if let Ok(games) = api::my_games().await {
-                            my_games.set(games);
+                            if my_games.is_alive() {
+                                my_games.set(games);
+                            }
                         }
                     });
                 }
-                user.set(Some(me));
+                // The page may have been unmounted (e.g. by the login
+                // redirect triggered while this request was in flight).
+                if user.is_alive() {
+                    user.set(Some(me));
+                }
             }
             Err(e) => {
-                error.set(Some(e));
-                user.set(Some(None));
+                if error.is_alive() {
+                    error.set(Some(e));
+                }
+                if user.is_alive() {
+                    user.set(Some(None));
+                }
             }
         }
     });
@@ -405,6 +409,9 @@ pub fn LobbyPage() -> View {
     spawn_local(async move {
         match api::game_types().await {
             Ok(types) if !types.is_empty() => {
+                if !game_types.is_alive() {
+                    return;
+                }
                 selected_game.set(types[0].id.clone());
                 game_types.set(types);
             }
@@ -414,7 +421,9 @@ pub fn LobbyPage() -> View {
 
     spawn_local(async move {
         if let Ok(list) = api::auth_providers().await {
-            auth_providers.set(list);
+            if auth_providers.is_alive() {
+                auth_providers.set(list);
+            }
         }
     });
 
@@ -470,53 +479,7 @@ pub fn LobbyPage() -> View {
                         }
                     }
                 },
-                Some(None) => view! {
-                    div(class="status-card") {
-                        div(class="card") {
-                            div(class="card-body p-4") {
-                                h1(class="h3 mb-3") {
-                                    span(class="text-warning") { "♠" }
-                                    " tavolo"
-                                }
-                                p(class="text-secondary") { "Log in with your account to play." }
-                                // rel="external" opts out of the SPA router's click
-                                // interception: these must be full page navigations
-                                // to the backend's OIDC login endpoints.
-                                (move || {
-                                    let providers = auth_providers.get_clone();
-                                    if providers.is_empty() {
-                                        // Providers could not be fetched: the
-                                        // generic route redirects to the first
-                                        // configured provider.
-                                        view! {
-                                            a(
-                                                class="btn btn-warning btn-lg w-100",
-                                                href="/auth/login",
-                                                rel="external",
-                                            ) {
-                                                "Log in"
-                                            }
-                                        }
-                                    } else {
-                                        view! {
-                                            div(class="d-grid gap-2") {
-                                                (providers.iter().cloned().map(|p| view! {
-                                                    a(
-                                                        class="btn btn-warning btn-lg w-100",
-                                                        href=p.login_url,
-                                                        rel="external",
-                                                    ) {
-                                                        "Log in with " (provider_label(&p.name))
-                                                    }
-                                                }).collect::<Vec<_>>())
-                                            }
-                                        }
-                                    }
-                                })
-                            }
-                        }
-                    }
-                },
+                Some(None) => view! { (login_card(auth_providers)) },
                 Some(Some(_me)) => {
                     view! {
                         (crate::components::nav::app_nav("/", move || {
@@ -671,13 +634,21 @@ pub fn LobbyPage() -> View {
                                                         div(class="mb-3") { (players_note) }
                                                     }
                                                 }))
-                                            Keyed(
-                                                list=fields,
-                                                view=move |f| view! {
-                                                    OptionInput(field=f.clone(), options=options)
-                                                },
-                                                key=|f| f.key.clone(),
-                                            )
+                                            // Recreate the option inputs on every
+                                            // game switch: keyed rendering kept
+                                            // the previous game's field (value,
+                                            // min/max) for shared keys such as
+                                            // target_score.
+                                            (move || {
+                                                let _game = selected_game.get_clone();
+                                                fields
+                                                    .get_clone()
+                                                    .into_iter()
+                                                    .map(|f| view! {
+                                                        OptionInput(field=f, options=options)
+                                                    })
+                                                    .collect::<Vec<_>>()
+                                            })
                                             button(
                                                 class="btn btn-warning btn-lg w-100 mt-auto",
                                                 on:click=on_create,

web/src/pages/login.rs

@@ -0,0 +1,41 @@
+//! Login page, shown after the API answered `401` (see [`crate::auth`]):
+//! the session expired, or the visitor tried to open a page that needs an
+//! account.
+//!
+//! The backend's OIDC callback lands the SPA back on the configured
+//! post-login redirect; [`crate::auth`] then returns the user to the page
+//! they were on before this one.
+use sycamore::prelude::*;
+use sycamore_router::navigate_replace;
+use wasm_bindgen_futures::spawn_local;
+
+use crate::api;
+use crate::auth;
+use crate::components::login::login_card;
+use crate::model::AuthProvider;
+
+#[component]
+pub fn LoginPage() -> View {
+    let providers = create_signal(Vec::<AuthProvider>::new());
+
+    spawn_local(async move {
+        // Already signed in: no business here — return to where the user
+        // was headed, or the lobby.
+        if matches!(api::me().await, Ok(Some(_))) {
+            let target = auth::saved_return_to().unwrap_or_else(|| "/".to_string());
+            auth::clear_return_to();
+            navigate_replace(&target);
+            return;
+        }
+        if let Ok(list) = api::auth_providers().await {
+            // The page can unmount while the fetch is in flight.
+            if providers.is_alive() {
+                providers.set(list);
+            }
+        }
+    });
+
+    view! {
+        (login_card(providers))
+    }
+}

web/src/pages/mod.rs

@@ -1,5 +1,7 @@
 pub mod briscola;
+pub mod chiamata;
 pub mod game;
 pub mod history;
 pub mod leaderboard;
 pub mod lobby;
+pub mod login;

web/src/ws.rs

@@ -45,6 +45,26 @@ impl GameSocket {
         self.send_json(serde_json::json!({ "action": "ack" }));
     }
 
+    /// Briscola chiamata: bid a rank in the calling auction.
+    pub fn bid_rank(&self, rank: i32) {
+        self.send_json(serde_json::json!({ "action": "bid", "rank": rank }));
+    }
+
+    /// Briscola chiamata: raise the points target (standing bid is the 2).
+    pub fn bid_points(&self, points: i32) {
+        self.send_json(serde_json::json!({ "action": "bid", "points": points }));
+    }
+
+    /// Briscola chiamata: leave the auction.
+    pub fn pass(&self) {
+        self.send_json(serde_json::json!({ "action": "pass" }));
+    }
+
+    /// Briscola chiamata: name the called card.
+    pub fn call_card(&self, card: &str) {
+        self.send_json(serde_json::json!({ "action": "call", "card": card }));
+    }
+
     fn send_json(&self, value: serde_json::Value) {
         let _ = self.sender.borrow_mut().unbounded_send(value.to_string());
     }

web/style.css

@@ -292,8 +292,12 @@ body {
     inset: 0;
     background: rgba(0, 0, 0, 0.65);
     display: flex;
-    align-items: center;
+    align-items: flex-start;
     justify-content: center;
+    /* Tall dialogs (the chiamata call picker, the scoring summaries) can
+     * exceed short windows: allow scrolling instead of clipping them. */
+    overflow-y: auto;
+    padding: 1rem;
     z-index: 20;
 }
 
@@ -302,8 +306,11 @@ body {
     border-radius: 14px;
     padding: 1.5rem 2rem;
     text-align: center;
-    min-width: min(320px, calc(100vw - 1.5rem));
-    max-width: calc(100vw - 1.5rem);
+    /* Centers the dialog when it fits and keeps it reachable (top
+     * aligned, scrollable via the overlay) when it does not. */
+    margin: auto;
+    min-width: min(320px, calc(100vw - 3rem));
+    max-width: calc(100vw - 3rem);
 }
 
 .capture-options {
@@ -667,3 +674,208 @@ body {
         gap: 0.4rem;
     }
 }
+
+/* ---------- briscola chiamata ---------- */
+
+/* Five seats: two across the top and one on each side of the viewer. */
+.table-grid.cinque {
+    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) minmax(0, 1fr);
+    grid-template-rows: auto 1fr auto;
+    grid-template-areas:
+        "tl . tr"
+        "left center right"
+        "bottom bottom bottom";
+}
+
+.seat-tl {
+    grid-area: tl;
+}
+
+.seat-tr {
+    grid-area: tr;
+}
+
+.called-badge {
+    background: var(--panel-light);
+    color: var(--accent);
+    font-weight: 700;
+    border-radius: 999px;
+    padding: 0.15rem 0.6rem;
+    border: 1px solid var(--accent);
+}
+
+.role-badge {
+    background: var(--accent);
+    color: var(--felt-dark);
+}
+
+.reveal-banner {
+    background: rgba(232, 197, 71, 0.15);
+    border: 1px solid var(--accent);
+    border-radius: 8px;
+    padding: 0.35rem 0.75rem;
+}
+
+.patta-banner {
+    background: rgba(217, 83, 79, 0.25);
+}
+
+/* The calling auction: standing bid, trail and the bid buttons. */
+.auction-panel {
+    background: rgba(0, 0, 0, 0.25);
+    border-radius: 10px;
+    padding: 0.75rem 1rem;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 0.5rem;
+    max-width: 32rem;
+}
+
+.auction-standing {
+    font-weight: 600;
+    text-align: center;
+}
+
+.auction-history {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.3rem;
+    justify-content: center;
+}
+
+.auction-chip {
+    background: var(--panel-light);
+    color: var(--muted);
+    border-radius: 4px;
+    padding: 0.1rem 0.4rem;
+    font-size: 0.75rem;
+}
+
+.bid-options {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.35rem;
+    justify-content: center;
+}
+
+.bid-button {
+    background: var(--panel-light);
+    color: var(--text);
+    border: 1px solid var(--accent);
+    border-radius: 6px;
+    padding: 0.25rem 0.6rem;
+    cursor: pointer;
+}
+
+.bid-button:hover {
+    background: var(--accent);
+    color: var(--felt-dark);
+}
+
+.bid-button.points {
+    border-color: var(--team-a);
+}
+
+.pass-button {
+    background: transparent;
+    color: var(--muted);
+    border: 1px solid var(--muted);
+    border-radius: 6px;
+    padding: 0.25rem 0.6rem;
+    cursor: pointer;
+}
+
+.pass-button:hover {
+    color: var(--text);
+    border-color: var(--text);
+}
+
+/* The auction winner's call picker: the four cards of the won rank,
+ * laid out in a compact grid so the dialog stays short. */
+.call-picker {
+    max-width: min(34rem, calc(100vw - 3rem));
+}
+
+.call-options {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 0.5rem;
+    margin: 1rem 0 0;
+}
+
+@media (min-width: 576px) {
+    .call-options {
+        grid-template-columns: repeat(4, minmax(0, 1fr));
+    }
+}
+
+.call-option {
+    background: var(--panel-light);
+    border: 1px solid #4c6a54;
+    border-radius: 10px;
+    padding: 0.4rem 0.3rem;
+    cursor: pointer;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 0.15rem;
+}
+
+.call-option:hover {
+    border-color: var(--accent);
+}
+
+/* Smaller than a hand card: the picker must fit short laptop windows. */
+.playing-card.call-card {
+    height: 84px;
+    margin: 0 auto;
+}
+
+.call-label {
+    display: block;
+    font-size: 0.8rem;
+    color: var(--text);
+    margin-top: 0.15rem;
+}
+
+.call-note {
+    display: block;
+    font-size: 0.7rem;
+}
+
+.call-note.partner {
+    color: var(--team-a);
+}
+
+.call-note.solo {
+    color: var(--accent);
+}
+
+.chiamata-row .score-title {
+    color: var(--accent);
+}
+
+@media (max-width: 576px) {
+    .table-grid.cinque {
+        grid-template-columns: 1fr 1fr;
+        grid-template-areas:
+            "tl tr"
+            "left right"
+            "center center"
+            "bottom bottom";
+    }
+
+    .auction-panel {
+        padding: 0.5rem;
+        max-width: 100%;
+    }
+}
+
+/* ---------- match history ---------- */
+
+/* One line per team inside the "Teams" cell of the history table. */
+.match-team {
+    font-size: 0.85rem;
+    line-height: 1.4;
+}

web/theme.css

@@ -40,11 +40,27 @@
 body {
     min-height: 100vh;
     background-color: var(--felt-dark);
-    background-image: radial-gradient(
-        ellipse at 50% -10%,
-        var(--felt) 0%,
-        var(--felt-dark) 65%
-    );
+    /* Casino-table felt: a fine grain texture tiled over the green
+     * gradient, lit from above and darkened towards the edges. The first
+     * layer is the topmost one. */
+    background-image:
+        radial-gradient(
+            ellipse at 50% 45%,
+            transparent 55%,
+            rgba(0, 0, 0, 0.38) 100%
+        ),
+        radial-gradient(
+            ellipse at 50% -10%,
+            rgba(255, 255, 255, 0.07),
+            transparent 60%
+        ),
+        url("/assets/felt.svg"),
+        radial-gradient(
+            ellipse at 50% -10%,
+            var(--felt) 0%,
+            var(--felt-dark) 65%
+        );
+    background-repeat: no-repeat, no-repeat, repeat, no-repeat;
     background-attachment: fixed;
     color: var(--text);
 }