Antichess Rules: - Capturing is compulsory (when more than one capture is available, the player may choose) - The king has no royal power and accordingly: - it may be captured as any other piece; - there is no check or checkmate; - the king may expose itself to capture; - there is no castling; - a pawn may also promote to a king. - Stalemate is a win for the stalemated player (the player with no legal moves).