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
There was a moment at the beginning when the machines were a positive, but lately we’ve being passing to the other extreme. Now it seems that a move isn’t good unless the machine says so.
Veselin Topalov 2016
When I am White I win because I am White. When I am Black I win because I am Bogoljubov.
Efim Bogoljubov
Every chessmaster was once a beginner.
Irving Chernev
Drawing general conclusions about your main weaknesses can provide a great stimulus to further growth.
Alexander Kotov
Thank the stars that I have been banned by FIDE so it is very clear I have nothing to do with this mess…
Garry Kasparov 2015