chess variant engine supporting Xiangqi, Shogi, Janggi, Makruk, S-Chess, Crazyhouse, Bughouse, and many more

A highly customizable way to play chess in your terminal / command line. Play online (via Lichess.org) and offline against the Fairy-Stockfish engine. All Lichess variants are supported.

Advanced Chess Assistance System (Chess Cheat) for Chess.com, Lichess.org, Pychess.org and more. Hassle-free 1-click install, no downloading. All devices and browsers supported.

Fairy-Stockfish releases with built-in NNUE (neural network) for Xiangqi, Janggi, and Makruk

chess variant NNUE training code for Fairy-Stockfish

EPD opening book generation and filtering for chess and chess variants

WebAssembly port of the chess variant engine Fairy-Stockfish with NNUE support

playground for Fairy-Stockfish in the browser

Minimalistic chess variant GUI for Fairy-Stockfish, superseded by fairyground

Calculate game statistics for chess variants

Puzzle generator for chess variants

Variant NNUE training data generator for Fairy-Stockfish

distributed chess variant engine testing

MCTS/UCT search for chess variants

Documentation of experiments and ideas about knowledge discovery for chess variants

Demo frontend for Fairy-Stockfish running with WebAssembly

bad move chess variant engine supporting Xiangqi, Shogi, Janggi, Makruk, S-Chess, Crazyhouse, Bughouse, and many more

A strong Lichess Bot made in js that can be deployed to Heroku

chess variant EPD opening book generation in the browser

Fairy-Stockfish website