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
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
Politics is a team game, here it is necessary to compromise, to take into account the views of other people. As for Garry, he is quite a contentious, totalitarian person. But in general, I’m sorry that Kasparov switched to a role that does not match the scale of his personality.
Vladimir Kramnik 2015
People knew about 110 years of chess history. Nowadays, nobody is able to tell you the name of the world champion of 2000.
Anatoly Karpov 2005
In addition to talent, Magnus has the health of a racehorse and a powerful nervous system.
Vladimir Kramnik 2015
The main thing is that you’ve got to keep on studying however old you are. You can’t just rely on your capital, so you have to try and keep up, and that is a difficult task.
Nigel Short 2016