In chess composition, a pair of interference variations created by Walter Grimshaw (1832-1890) around 1850, in which piece X interferes with piece Y and vice versa.
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Quotes of the Day
People knew about 110 years of chess history. Nowadays, nobody is able to tell you the name of the world champion of 2000.
Anatoly Karpov 2005
I think the players in this world championship are in different leagues. Karjakin is excellent—Carlsen is special.
Garry Kasparov 2016
First-class players lose to second-class players because second-class players sometimes play a first-class game
Siegbert Tarrasch
First of all, I am a mother, and only then a chessplayer
Ketevan Arakhamia-Grant 2009
Despite the ugliness of his decline, Bobby Fischer deserves to be remembered for the great things he did for chess and for his immortal games.
Garry Kasparov 2004