Villager Chess

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Villager Chess

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Play chess against villagers! A Play Chess button on the trade screen starts a full game - their skill scales with trading level, from Novice pushover to near-unbeatable Master.

Mod Loaders
Minecraft
26.2

About

Description

Villager Chess

Ever wondered if that Master-level librarian is actually smart? Challenge them to chess and find out.

Open any villager's trade screen and hit Play Chess. A full chess board opens right there - no items, no commands, no setup. You always play White.

How strong are they?

A villager's trading level sets its chess strength:

Villager level Chess strength
Novice Hangs pieces, misses mates
Apprentice Punishes only blatant blunders
Journeyman Solid club beginner
Expert Strong; rarely errs
Master Near-unbeatable

So a fresh Novice is a free win - but if you want a real fight, trade one up to Master first.

How to play

  • Click a piece, then click one of its highlighted squares.
  • Pawns reaching the last rank open a promotion picker.
  • Full rules are enforced: castling, en passant, threefold repetition, the 50-move rule, and insufficient-material draws.
  • Resign with the button, or just close the board. Walking more than 16 blocks away, the villager dying, or disconnecting abandons the game.
  • No stakes, no rewards - just for fun (and bragging rights).

Under the hood

  • A from-scratch pure-Java chess engine: 0x88 board, full move legality, Zobrist hashing - move generation verified against perft reference counts.
  • Negamax search with alpha-beta pruning, iterative deepening, and quiescence, on a background thread so the server never stutters.
  • Fully server-authoritative: the server owns all game state; clients only send move attempts.

Compatibility

Plays nicely with the other Villager Games mods - the trade-screen buttons stack instead of overlapping. Requires Fabric API.

Requirements

  • Minecraft 26.2
  • Fabric Loader 0.19.3+ and Fabric API
  • Java 25
  • Install on both client and server (works in singleplayer out of the box)

♞ Villager Chess

Ever wondered if that Master-level librarian is actually smart? Challenge them to chess and find out.

Open any villager's trade screen and hit Play Chess. A full chess board opens right there - no items, no commands, no setup. You always play White.

How strong are they?

A villager's trading level sets its chess strength:

Villager level Chess strength
Novice Hangs pieces, misses mates
Apprentice Punishes only blatant blunders
Journeyman Solid club beginner
Expert Strong; rarely errs
Master Near-unbeatable

So a fresh Novice is a free win - but if you want a real fight, go trade one up to Master first.

How to play

  • Click a piece, then click one of its highlighted squares.
  • Pawns reaching the last rank open a promotion picker.
  • Full rules are enforced: castling, en passant, threefold repetition, the 50-move rule, and insufficient-material draws.
  • Resign with the button, or just close the board. Walking more than 16 blocks away, the villager dying, or disconnecting abandons the game.
  • No stakes, no rewards - just for fun (and bragging rights).

Under the hood

  • A from-scratch pure-Java chess engine: 0x88 board, full move legality, Zobrist hashing - move generation verified against perft reference counts.
  • Search: negamax with alpha-beta pruning, iterative deepening, and quiescence search, running on a background thread so the server never stutters.
  • Fully server-authoritative: the server owns all game state; clients only send move attempts. No cheating with a modified client.

Compatibility

Plays nicely with the other Villager Games mods - the trade-screen buttons stack instead of overlapping.

Requirements

  • Minecraft 26.2
  • Fabric Loader ≥ 0.19.3 + Fabric API
  • Java 25
  • Install on both client and server (works in singleplayer out of the box)