Minor exchange
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In chess, the minor exchange refers to the capture of the opponent's bishop for the player's knight (or, more recently, the stronger minor piece for the weaker). The term is rarely used.
In most chess positions, a bishop is worth slightly more than a knight because of its longer range of movement. As a chess game progresses, pawns tend to get traded, removing support points from the knight and opening up lines for the bishop. This generally leads to the bishop's advantage increasing over time.
There are some occasions when a knight can be worth more than a bishop, so this exchange is not necessarily made at every opportunity to do so.
[edit] See also
- The exchange (chess) (includes discussion of the exchange sacrifice)