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
It is true, in chess so far that men and women cannot be on the same level from an economic situation, but there can always be a more reasonable way to combine the financial part and the players’ situation.
Hou Yifan 2016
Some twenty years ago an English journalist complained that in sports, only chess and marbles were above suspicion. One wonders what has happened in the world of marbles.
Hans Ree
Preparation for a world championship was always an arms race, in previous times with books, then with seconds, today with computers.
Vishy Anand 2008
I never make mistakes in chess, I only have hallucinations!
Vlastimil Hort 1987
Never felt more like singin’ the blues, cos I never thought that I’d ever lose…
Vladimir Kramnik 2017