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1. python-chess python-chess Public

   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 c…

   Python 2.3k 507

2. lichess-org/stockfish.wasm lichess-org/stockfish.wasm Public

   WebAssembly port of the strong chess engine Stockfish

   C++ 249 41

3. shakmaty shakmaty Public

   A Rust library for chess and chess variant rules and operations

   Rust 193 35

4. lichess-org/fishnet lichess-org/fishnet Public

   Distributed Stockfish analysis for lichess.org

   Rust 692 100

5. syzygy-tables.info syzygy-tables.info Public

   User interface and public API for probing Syzygy endgame tablebases

   Python 59 13

6. lichess-org/lila-openingexplorer lichess-org/lila-openingexplorer Public

   Opening explorer for lichess.org that can handle all the variants and trillions of unique positions

   Rust 127 35