About ChessPuzzle.net

ChessPuzzle.net is an ongoing research project in algorithmic discovery of chess puzzles.

Last update October 11th, 2020. Read the release notes.

Support ChessPuzzle.net and become a patron.

Thanks to all users who send me feedback.

Development

Canvas Chess by Ryan Cook
Stockfish chess engine, licensed under GPL
Stockfish.js 8.0 browser chess engine by Niklas Fiekas, licensed under GPL
Syzygy table bases by Ronald de Man
Gaviota table bases by Miguel A. Ballicora
Absolute Zero C# bit boards and search algorithm by Zong Zheng Li, licensed under Creative Commons Attribution
chess.js, a Javascript chess library by Jeff Hlywa
Current games are from The Week In Chess by Mark Crowther, or provided directly by tournament organizers.
Historical games are from:
- The TWIC archives by Mark Crowther
- Britbase by John Saunders
- Dutchbase by the Max Euwe Centrum
- Olimpbase by Wojciech Bartelski
- PGN Mentor
- Big Database by ChessBase
Chess piece sets:
- CBurnett by C. Burnett for Wikipedia, licensed under CC BY_SA
- Chess7 by Style 7
- Chessnut by Alexis Luengas, licensed under Apache License 2.0
- Chicago, Iowa, and Oslo by Ben J. Friedrich's Chess Foundry Pack, licensed under CC BY-ND
- Fantasy by Maurizio Monge for Wikipedia
- Kosal by Philatype, licensed under Creative Commons Attribution 4.0 International Public License
- Leipzig, Magnetic, Maya, and Merida by Armando Hernández Marroquin
Player text excerpts and image thumbnails are from Wikipedia, licensed under CC BY_SA.
Icons by Font Awesome licensed under CC BY 4.0.
Howler.js by James Simpson and GoldFire Studios, Inc., lincensed under MIT license