76 releases
0.27.2 | Sep 22, 2024 |
---|---|
0.27.1 | Jul 11, 2024 |
0.27.0 | Apr 1, 2024 |
0.26.0 | Jun 10, 2023 |
0.0.1 |
|
#15 in Game dev
2,065 downloads per month
Used in 29 crates
(24 directly)
610KB
10K
SLoC
shakmaty
A Rust library for chess move generation
Features
-
Generate legal moves:
use shakmaty::{Chess, Position}; let pos = Chess::default(); let legals = pos.legal_moves(); assert_eq!(legals.len(), 20);
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Play moves:
use shakmaty::{Square, Move, Role}; // 1. e4 let pos = pos.play(&Move::Normal { role: Role::Pawn, from: Square::E2, to: Square::E4, capture: None, promotion: None, })?;
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Detect game end conditions:
pos.is_checkmate()
,pos.is_stalemate()
,pos.is_insufficient_material()
,pos.outcome()
. -
Read and write FEN, SAN and UCI notation.
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Supports all Lichess variants: Standard chess, Chess960, Antichess, Atomic, King of the Hill, Three-Check, Crazyhouse, Racing Kings and Horde. Provides vocabulary to implement other variants.
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Bitboards and compact fixed shift magic attack tables.
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Zobrist hash positions.
-
Probe Syzygy tablebases with shakmaty-syzygy.
Documentation
Benchmarks
Simple perft of the initial position. No hashtables. i7-6850K CPU @ 3.60GHz.
perft | 4 | 5 |
---|---|---|
shakmaty 0.16.0 | 1.0 ms | 24.1 ms |
jordanbray/chess 3.1.1 | 0.8 ms | 18.6 ms |
Stockfish 8 (x86-64-bmi2) | 4 ms | 33 ms |
It should be noted that Stockfish is not optimized for perft speed and also maintains additional data structures for evaluation. Newer versions of Stockfish put even less emphasis on this.
License
Shakmaty is licensed under the GPL-3.0 (or any later version at your option). See the COPYING file for the full license text.