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
” Chess is a sport. A violent sport.”
Marcel Duchamp
Who was the greatest chess player? If chess is an art, Alekhine. If chess is a science, Capablanca. If chess is a struggle, Lasker.
Saviely Tartakower
Garry has done a lot over the chess board – unbelievable things. He is the greatest world champion in the chess history. The question is what he has done for the federations, what he has done for his own federation.
Georgios Makropoulos 2013
Tal develops all his pieces in the centre and then sacrifices them somewhere.
David Bronstein
Magnus is playing fantastic and I play like I always play, pretty badly
Anish Giri 2017