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
” Oh, those exclamation points! How they erode the innocent soul of the amateur, removing all hope of allowing him to examine another player’s ideas critically!”
Tigran Petrosian
I was pushed out of USSR by the hands of Petrosian and Karpov. But now, after 10 years, Petrosian is not longer alive and Karpov is not longer World Champion, so it seems that everything is in place now.
Viktor Kortchnoi 1986 NIC
” The essence of chess is thinking about what chess is.”
David Bronstein
Everything is very concrete nowadays. The computer often gives unnatural moves which are correct, but sometimes hard to remember. You know a line is correct, but then your forget something and lose terribly.
Daniel Stellwagen 2010
A game of chess has three phases: the opening, where you hope you stand better; the middlegame, where you think you stand better; and the ending, where you know you stand to lose.
Savielly Tartakower
