In-browser chess, zero setup
Chess
Learn and play chess with Stockfish — a world-class engine and a full rules referee, entirely in your browser. No account, no server, nothing to install.
Engine
Stockfish 18, in your tab
The strongest chess engine in the world runs locally on WebAssembly — from first-timer levels to far beyond any human.
Rules
A complete referee
Castling, en passant, promotion, threefold repetition, the fifty-move rule — every rule enforced, every result adjudicated.
Lessons
Learn by playing
A hands-on curriculum: guess the move, spot the tactic, deliver the mate — checked move by move.