xi. If, at the end of a game, the players remain, one with a

superior to an inferior force, or even if they have equal forces, the defending player may call upon his adversary to mate in fifty moves on each side, or draw the game.

[If one player persist in giving perpetual check, or repeating the same move, his opponent may count the moves for the draw; in which case touching a piece if reckoned a move.]

xii. Stalemate, or perpetual check is a drawn game.