Open Source Notices

Licenses

This page lists third-party software used by chess2shogi and provides license and source information.

Stockfish.js

chess2shogi uses Stockfish.js 17.1.0 as its chess engine. Stockfish.js is distributed under the GNU General Public License v3.

Package: stockfish@17.1.0
Bundled files: vendor/stockfish/stockfish-17.1-lite-single.js, vendor/stockfish/stockfish-17.1-lite-single.wasm
License text: GNU GPL v3
Stockfish.js source: github.com/nmrugg/stockfish.js
Original Stockfish source: github.com/official-stockfish/Stockfish

The bundled Stockfish files are unmodified copies from the npm package. Only the hashed filenames were renamed for stable local references.

If you distribute a modified Stockfish build, you must provide the corresponding source code under GPLv3-compatible terms.