The trading of a minor piece (bishop or knight) for a rook. To sacrifice the exchange is to trade the rook for the minor piece.
ECHESSPEDIA
Quotes of the Day
I am fighting for the future of chess, for the integrity of the game I love. Only when it’s clean it can grow.
Garry Kasparov 2014
When I play well, I don’t win!
Maxime Vachier Lagrave 2017
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
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
In order to become a grandmaster class player whose understanding of chess is superior to the thousands of ordinary players, you have to develop within yourself a large number of qualities, the qualities of an artistic creator, a calculating practitioner, a cold calm competitor.
Alexander Kotov