Built by Jeff Gilbert
Play chess in your browser against a strong computer. This app prefers Stockfish 17.1 (multi-threaded) when supported by your browser, and automatically falls back to a fast single-thread build otherwise. It also uses a live Lichess opening book to follow real-world theory. You get hints, coaching notes, and a scoresheet for review—plus instant start, no sign-in, and no clutter.
Choose your side or set up a position
(version 19SEPT25 — checkerboard skin)