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
We will note the openings used by the participants of a nine-round match. The age of openings is considerably higher than the age of both rivals. Some opening positions could be analyzed by Steinitz when he was preparing to his match with Zukertort.
Mikhail Tal 1966 (Petrosian-Spassky match)
I spend hours playing chess because I find it so much fun. The day it stops being fun is the day I give up.
Magnus Carlsen
The winner of the game is the player who makes the next-to-last mistake.
Savielly Tartakower
I personally believe that Karpov should have been more generous with Kirsan Ilyumzhinov. Kirsan is the only president in the history of FIDE, and maybe in the history of all international federations, who has contributed dozens of million dollars for the sport he loves. By the way, some of these millions went directly to Anatoly’s pocket…
George Makropoulos 2005
It’s always more difficult to hold the title than to get it.
Vladimir Akopian 2012