In the game of chess, perpetual check is a situation in which one player can force a draw by an unending series of checks. Such a situation typically arises when the player who is checking cannot deliver checkmate; while failing to continue the series of checks gives the opponent at least a chance to win. A draw by perpetual check is no longer one of the rules of chess. However, such a situation will eventually result in a draw by either threefold repetition or the fifty-move rule, but usually players agree to a draw (Burgess 2000:478).
Perpetual check can also occur in other chess variants, although the rules relating to it may be different. For example, giving perpetual check is not allowed (an automatic loss for the giver) in both shogi and xiangqi.
Famous quotes containing the words perpetual and/or check:
“His breast was the seat of all those passions which degrade our nature, and disturb our reason. There they raged in a perpetual conflict; but avarice, the meanest of them all, generally triumphed, ruled absolutely, and in many instances, which I forbear to mention, most scandalously.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“The habit some writers indulge in of perpetual quotation is one it behoves lovers of good literature to protest against, for it is an insidious habit which in the end must cloud the stream of thought, or at least check spontaneity. If it be true that le style c’est l’homme, what is likely to happen if l’homme is for ever eking out his own personality with that of some other individual?”
—Dame Ethel Smyth (1858–1944)