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.
ECHESSPEDIA
Quotes of the Day
” Oh, those exclamation points! How they erode the innocent soul of the amateur, removing all hope of allowing him to examine another player’s ideas critically!”
Tigran Petrosian
We must finish once and for all with the neutrality of chess. We must condemn once and for all the formula “chess for the sake of chess”, like the formula “art for art’s sake”. We must organize shock brigades of chess-players, and begin immediate realization of a Five-Year Plan for chess.
Nikolai Vasilyevich Krylenko
I think that the World Champion should try to defend the quality of play more than anyone else!
Boris Spassky
Good players actually use their long-term memory much more than inexperienced players, who use their short-term memory. Good players try to recall patterns.
Magnus Carlsen 2016 2016
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