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
Fischer wanted to prove that all world championship games after his victory were prearranged. He did not convince me.
Vishy Anand 2008
To Put It Mildly, I Have Not a Bit of Respect For Topalov
Vladimir Kramnik 2015
Carlsen simply plays chess well. It seems to me that in such cases people are inclined to look for some supernatural explanation, although the simplest explanation is also the most appropriate: the guy simply plays chess well.
Alexander Grischuk 2014
Politics is a team game, here it is necessary to compromise, to take into account the views of other people. As for Garry, he is quite a contentious, totalitarian person. But in general, I’m sorry that Kasparov switched to a role that does not match the scale of his personality.
Vladimir Kramnik 2015
Chess is respected in culture and education, but our organization is far behind. FIDE must lead, not drag chess down.
Garry Kasparov 2014