Perpetual check[ edit ]



In the game of chess, perpetual check is a special case of draw by threefold repetition, in which one player forces the repetition by a series of checks.

In the diagram on the right, from Unzicker-Averbakh, Stockholm 1952, with Black to play, it is clear that Black must give up one of his rooks for White´s c-pawn. He can, however, exploit the weakness of White´s king-side pawn structure with 1... Rxc7! 2. Qxc7 Ng4! 3. hxg4 Qf2+ salvaging a draw by threefold repetition with checks on h4 and f2. (See algebraic chess notation.)

A draw by perpetual check used to be in the rules of chess. However, it has been removed because perpetual check will eventually result in a draw by either
threefold repetition or the fifty move rule. Also, if a player intends to draw the game in such a manner, the players usually agree to a draw.

Perpetual check can also occur in other chess-like games, although the rules relating to it may be different. For example, giving perpetual check is not allowed in shogi.


categories: myChess-Wiki | chess terminology | Perpetual check
article No 620 / last change on 2005-06-29, 05:24pm

back  write a new article  show all articles  


direct links: chess chess960 correspondence chess Fischer Random Chess chess terminology chess players chess opening


This article is based on the article Perpetual check from the free encyclopaedia Wikipedia and stands under the GNU-Licence for free documentation. In the Wikipedia a list of the authors is available.

5 chessplayers online and 1 in the chat! Games are being played: 420, Challenges: 4, Halfmoves up to now: 6.352.258
Copyright 2003-2017 Karkowski & Schulz - All rights reserved - privacy statement