Appeared for the first time in 1915. A pin in which the Chessman subject to the pin may move along the same line (file, rank or diagonal) which it shares with the attacker.
ECHESSPEDIA
Quotes of the Day
I give 98 percent of my mental energy to Chess. Others give only 2 percent!
Robert Fischer
Despite the ugliness of his decline, Bobby Fischer deserves to be remembered for the great things he did for chess and for his immortal games.
Garry Kasparov 2004
Agon was just sold for one pound and the reputation of Ilyumzhinov’s FIDE is worth even less than that.
Garry Kasparov 2014
I have often written that Karpov is like an iceberg. Well, Kasparov was the Titanic.
Alexander Roshal
You only task in the opening is to reach a playable middle game.
Lajos Portisch