A three-move problem mechanism invented in a composer tournament held in Bristol in 1861 by Frank Healey (1828-1906).
A clearance move by a piece along a line and over a certain square, played so that a second piece may move in the same direction along the same line and occupy that square. The first piece is not used for the mate.
ECHESSPEDIA
Quotes of the Day
We must finish once and for all with the neutrality of chess. We must condemn once and for all the formula “chess for the sake of chess”, like the formula “art for art’s sake”. We must organize shock brigades of chess-players, and begin immediate realization of a Five-Year Plan for chess.
Nikolai Vasilyevich Krylenko
I am the best player in the world, and I am here to prove it.
Robert Fischer 1971
It’s always more difficult to hold the title than to get it.
Vladimir Akopian 2012
If the 12th game (from the match Carlsen-Karjakin)… were a restaurant dish, I would send it back to the chef.
Nigel Short 2016