Licenses
Last updated
Software, fonts, artwork and data used in Mansuba, under the licenses shown. CC0 entries need no attribution and are listed by courtesy.
The chess engine Stockfish runs in your browser and is licensed under the GNU General Public License version 3. The licence text is served with the engine at /engine/LICENSE-GPL-3.0.txt. The source code is public for the engine (github.com/official-stockfish/Stockfish) and for the WebAssembly build we use (github.com/nmrugg/stockfish.js, version 19).
Application libraries
- React (react, react-dom)MIT, Meta Platforms, Inc. and affiliates
- React RouterMIT, Remix Software / React Training LLC
- Radix UIMIT, WorkOS
- Stockfish 19 (chess engine, WebAssembly build, runs in your browser)attribution requiredGPL-3.0-or-later, The Stockfish developers (T. Romstad, M. Costalba, J. Kiiski, G. Linscott and others); build as Stockfish.js by Chess.com, LLC (github.com/nmrugg/stockfish.js); network by Chris Bao (sscg13)
- KaTeXMIT, Khan Academy and other contributors
- chess.jsBSD-2-Clause, Jeff Hlywa
- react-chessboardMIT, Ryan Gregory
- LucideISC, Lucide Icons and Contributors
Fonts
- InterSIL OFL 1.1, The Inter Project Authors
- JetBrains MonoSIL OFL 1.1, The JetBrains Mono Project Authors
Board artwork
- Classic piece setBSD-3-Clause, Colin M.L. Burnett (Cburnett)
- rhosgfx piece setCC0 1.0, RhosGFX
- kiwen piece setattribution requiredCC BY 4.0, neverRare (kiwen-suwi)
- totoy piece setattribution requiredCC BY 4.0, totoy
Chess data
- Lichess Open DatabaseCC0 1.0, Lichess
- chess-openings (ECO names)CC0 1.0, Lichess