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
With the modern computer age, there are some new ideas, but the principles are basically the same… I try not to over-focus on preparation.
Magnus Carlsen 2012
Chess is a fairy tale of 1001 blunders.
Savielly Tartakower
To Put It Mildly, I Have Not a Bit of Respect For Topalov
Vladimir Kramnik 2015
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
Chess…gives students an opportunity to think at a different level.
Dr. Chad Witherspoon 2014
