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
Danailov, in his campaign, used the motto – “I know.” One or two months later he said “I am learning.” Three years after, we know that he cannot learn. He gave so many promises, he has done absolutely nothing.
Georgios Makropoulos 2013
Of chess it has been said that life is not long enough for it, but that is the fault of life, not chess.
Irving Chernev
It isn’t important what comes off the board, but what stays on!
Yasser Seirawan
The Golden Age, when machines were weak and my hair was strong!
Garry Kasparov 2017
Chess is a scientific game and its literature ought to be placed on the basis of the strictest truthfulness, which is the foundation of all scientific research.
W. Steinitz