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
My chess method is without formulas, without orthodox thinking. I always explain that chess is an art and that there are no definite judgments.
Lev Polugaevsky 1990 NIC
Peter Svidler clearly needs to be more ambitious and take more risk. 12 draws out of 14 games, I mean, come on, that’s not a Champion’s attitude there!
Anish Giri
Tal develops all his pieces in the centre and then sacrifices them somewhere.
David Bronstein
When your house is on fire, you can’t be bothered with the neighbors. Or, as we say in chess, if your King is under attack, don’t worry about losing a pawn on the queenside.
Garry Kasparov
School is a waste of time for me. I want to be world chess champion, and they can’t teach me anything there.
Robert Fischer 1961