A move very calculated which may give up material in order to create a winning chance or a positional advantage. This action could also be used to create some psychological impact like in zeitnot with the idea to destabilise the opponent. Among sacrifices, may be mentioned the positional sacrifice, the mating sacrifice, etc.
ECHESSPEDIA
Quotes of the Day
I detest the endgame. A well-played game should be practically decided in the middle-game!
David Janowski
Chess should not become an obsession. Otherwise there’s a danger that you will slide off into a parallel world, that you lose your sense of reality, get lost in the infinite cosmos of the game. You become crazy.
Magnus Carlsen 2010
it would have been a debacle if Karjakin had become the 17th World Champion.
Garry Kasparov 2016
Garry has done a lot over the chess board – unbelievable things. He is the greatest world champion in the chess history. The question is what he has done for the federations, what he has done for his own federation.
Georgios Makropoulos 2013
Now, at 51, in my life I have reach the stage between the middlegame and the endgame. But I don’t have the feeling that I am in the endgame already.
Boris Spassky 1988 NIC