 Sometimes the objective is antithetical to normal chess, such as helping (or even compelling) the opponent to checkmate one's own king.While a "chess puzzle" is any puzzle involving aspects of chess, a "chess problem" is an orthodox puzzle in which one must play and win or draw a game, starting with a certain composition of pieces on the chess board, and playing within the standard rules of chess.Orthodox chess problems involve positions that can arise from actual game play (although the process of getting to that position may be unrealistic).