Full rules · minimax AI

Chess

Full-rules chess against a minimax AI: castling, en passant, promotion, check, checkmate and stalemate. Three levels, legal-move dots and undo.

Status —

Tap a piece then a highlighted square (or drag). Castling: tap the king then the two-square destination. Promotion pops a picker. The AI thinks with alpha-beta minimax plus piece-square tables — “Hard” looks 4 half-moves ahead.