he must take that Piece or Pawn legally or move his King as his adversary may select.
XV. Moving out of turn is an illegal move.
XVI. If a player, in attacking his adversary, fails to call "Check" he cannot exact any penalty if his opponent fails to notice the check.
XVII. When check is given, any move made by the player, whose King is in check, is illegal if it does not stop the check.
XVIII. If a false or illegal move is found to have been made, in a game, all subsequent moves must be retracted, and a proper move made, after which the game proceeds as if no error had been made. But if the source of the manifest illegal or false move cannot be traced, then the game must be annulled.
XIX. In the case of a dispute between the players, if the question is one of fact, it must be referred to a bystander or umpire; and if it is a question of law it must
