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
Botvinnik, Korchnoi and Kasparov had to hate the opponent to play successfully. I belong to a different type of chess players. I’m like Keres, Spassky and Portisch. On the board we fight, but in life we get along great.
Anatoly Karpov 2015
Never felt more like singin’ the blues, cos I never thought that I’d ever lose…
Vladimir Kramnik 2017
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 duty of a World Champion is not only to play games but also to explain to the public why he is winning
Garry Kasparov NIC 1989
In one game it is too difficult to play both for win and draw simultaneously.
Mihail Tal 1969