Simulation game
Chess.
Standard chess with the full rules. Play both sides, the random baseline, or (on the local build) a top-ranked chess model from the GPU farm.
Black
White
Environment API
Plain chess, FIDE rules: castling, en passant, promotion, checkmate, stalemate, threefold repetition, fifty-move rule, insufficient material. ChessEnv.reset() and step(action) move one side per step. Actions: from·64 + to (a1 = 0 … h8 = 63) for ordinary moves and queen promotions, 72 under-promotion ids from 4096. Observation: 19 × 8 × 8 planes from the mover's view (own pieces, their pieces, colour, castling rights, en-passant file, fifty-move clock). Reward: 1 for delivering checkmate, 0 otherwise, −1 for an illegal action. Pieces: cburnett set (Colin M.L. Burnett).