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 understood that through chess I could express myself and chess became my natural language.
Boris Spassky 1995
You only task in the opening is to reach a playable middle game.
Lajos Portisch
Chess is my hobby. I have been playing chess since five years old. I like to play chess, to help chess, sponsoring chess, and attract my business friends to chess in order to develop and popularize chess. Everybody has a hobby. My hobby is chess, boxing and Buddhism.
Kirsan Ilyumzhinov 2010
When you see a good move, look for a better one
Emanuel Lasker
I will be World Champion, if not now I will be World Champion later, but of course better now!
Sergey Karjakin 2016