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
Fischer’s strength, among other things, was his ability to evolve the most efficient plan for the middlegame right after the opening.
Boris Spassky
I am fighting for the future of chess, for the integrity of the game I love. Only when it’s clean it can grow.
Garry Kasparov 2014
Karpov Lost, Kasparov Lost, the Only One Who Remained Is Me.
Silvio Danailov 2014
Vasiukov hadn’t won a single game against me for 59 years and then suddenly won. I can’t call it shame. Shame or no shame, it’s a pity that he won…
Viktor Korchnoi 2012
” Chess is a sport. A violent sport.”
Marcel Duchamp