Chess Python Packages

chess

A chess library for Python, with move generation and validation, PGN parsing and writing, Polyglot opening book reading, Gaviota tablebase probing, Syzygy tablebase probing, and UCI/XBoard engine communication

python-chess

A chess library for Python, with move generation and validation, PGN parsing and writing, Polyglot opening book reading, Gaviota tablebase probing, Syzygy tablebase probing, and UCI/XBoard engine communication

stockfish

Integrates the Stockfish chess engine with Python (Official fork)

enforce-rules

This project lets you enforce rules on values, expanding the type system of python. (Requires python 3.10+)

chessvision

Chess board recognition toolkit ♟️

chessboard

:game_die: CLI to solve combinatoric chess puzzles.

pgx

♟️ Vectorized RL game environments in JAX

chesslib

C-lib Python3 extension for efficient chess draw-gen

mache

Measure A Chess Engine - From Mache (μάχη, battle) - Scripts and CI templates for measuring chess engines

maia2

Official implementation of Maia-2, a unified human-like chess model across skill levels. For new projects, see Maia-3.

esca

Rust/Python MIT chess library: rules, facts, explanations, PGN, opening books and names, UCI client, and an MCP server over it; one API, Chess960 throughout.

moonfish

~2000 Elo Python Chess Engine that implements: Negamax, PeSTO’s Evaluation, Null Move, Quiescence Search, Lazy SMP.

chess-mcp-server

A Model Context Protocol (MCP) server for playing Chess with AI Agents, featuring an interactive web dashboard.

libscid

libscid: chess applications made easy

chess-com

Python client for Chess.com Published-Data API

chessapi

A fast, fully-typed Python client for Chess.com and Lichess APIs ♟️

chessformer-lens

A toolkit+visualizer that is designed for mech interp researchers working with chess models that use transformers tokenized by square.

chipiron

chipiron is a Python library for playing chess. chipiron uses a tree-based approach and neural networks for move selection. The project includes a graphical user interface (GUI) that allows users to play against the Chipiron chess engine or watch it play.

chessmg

Chess move generation at engine speed with a Python API — the move generator behind the helpmate tablebase project.

chess-tuning-tools

A collection of scripts aimed at efficiently tuning chess engine parameters.

rust-chess

Python wrapper of the Rust chess crate.

sunfish

Sunfish: a Python Chess Engine in 111 lines of code

chess-board

A chess board library for presenting game positions

bulletchess

A high performance Python C extension for chess