Credits

Credits

This site is made by the team behind ChessHelper (chesshelper.ai). It uses photos, piece images and software made by others, credited below with their licenses.

Photos

• A game of chess.jpg by Asterisken, Wikimedia Commons, CC BY-SA 4.0. Used on this site with no changes other than resizing.
• Wooden Chess Set (4163089889).jpg by Alan Levine from Archydal, Canada, Wikimedia Commons, CC0. Used on this site with no changes other than resizing.
• Chess set.jpg by Mikkel Houmøller, Wikimedia Commons, CC BY-SA 4.0. Used on this site with no changes other than resizing.

Chess pieces

Board diagrams use the Papercut piece set by Nikolay Anzarov, licensed under CC BY 4.0. The pieces are used unchanged; the board, colors and arrows are drawn by this site. The site icon is the Papercut white king on an indigo background.

Analysis software

Engine evaluations on this site were checked with Stockfish, free software licensed under the GNU General Public License version 3 (source code). Move legality was checked with chess.js by Jeff Hlywa, licensed under the BSD 2-Clause license. Neither runs on this website; the site itself is plain HTML and CSS.

Trademarks

Chess.com, Lichess, DecodeChess, Stockfish and other product names belong to their owners and are used here only to identify those products.