Licences and source code

Crazyhouse game

The game code is free software under the GNU General Public License version 3 or later. It comes without any warranty. Source of this game.

Fairy-Stockfish engine

GPL version 3, by the Fairy-Stockfish and Stockfish authors (list). Source of the versions used here: fairy-stockfish.wasm 1.1.12, ffish 0.7.10. Project: github.com/fairy-stockfish/Fairy-Stockfish.

Neural network

crazyhouse-8ebf84784ad2.nnue, by belzedar_, from the Fairy-Stockfish network list. The author can ask for it to be removed at the address below.

Pieces

mpchess by Maxime Chupin, GPL version 3 or later, as distributed by Lichess.

Go game

The search and the human-move picker come from Web KaTrain (MIT licence). The neural networks kata1-b18c384nbt-s9996604416-d4316597426 and b18c384nbt-humanv0 are from KataGo (licence). The networks run on TensorFlow.js (Apache License 2.0), and pako unpacks them.

Contact: ukraiego@fel.cvut.cz.