ChessPigeonThird-Party Notices
ChessPigeon is built on the work of many people. This page credits the engine, artwork and libraries it uses, with their licences.
ChessPigeon's copyright notice applies to its original content. Third-party components remain subject to their respective licences; the notice does not restrict rights those licences grant you.
Chess engine
Analysis and computer opponents use Stockfish.js 19. Copyright © Chess.com, LLC and the Stockfish contributors. Licensed under the GNU General Public License version 3. Source code for this release is available at github.com/nmrugg/stockfish.js (v19.0.0). The engine's licence text is distributed with the engine files.
Chess rules library
Move generation, notation and PGN handling use chessops by Niklas Fiekas, licensed under the GNU General Public License version 3 or later. Source: github.com/niklasf/chessops.
Piece artwork
| Set | Author | Licence |
|---|---|---|
| Classic | Colin M. L. Burnett | BSD-3-Clause |
| Merida | Armando Hernandez Marroquin | GPL-2.0-or-later |
| Chessnut | Alexis Luengas | Apache-2.0 |
| Spatial | Maurizio Monge | MIT |
| Celtic | Maurizio Monge | MIT |