Chess set, wood, leather, velvet and room lighting:Poly Haven, public domain (CC0). Chess set by Riley Queen.Sounds:Kenney, public domain (CC0).Computer opponent: Stockfish 19, free software under the GNU GPL v3. Source: github.com/nmrugg/stockfish.js.Also built with: three.js (MIT), chess.js (BSD), Rapier physics (Apache 2.0), and the Bitter and Alfa Slab One typefaces (SIL OFL).Your game is saved only in this browser. Nothing is sent anywhere.