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A trade is a chess term where one player sacrifices a piece to capture another. Generally trades occur between pieces of equal value (like sacrificing a knight for a bishop).

When to Trade[]

You should only trade when you earn points from it, it gives you a positional advantage, you remove a strong opponent piece, you sacrifice a bad piece, or if you're already up material. Otherwise it's best to employ some other tactics. Offering a trade gives your opponent many options.

a b c d e f g h
8 a8 rd b8 c8 d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 pd c7 pd d7 bd e7 pd f7 pd g7 pd h7 pd 7
6 a6 b6 c6 nd d6 pd e6 f6 g6 h6 6
5 a5 b5 bl c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 pl f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 nl g3 h3 3
2 a2 pl b2 pl c2 pl d2 pl e2 f2 pl g2 pl h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 g1 h1 rl 1
a b c d e f g h
1. Bxc6 is a bad trade. It doesn't improve white's position and if 2. Bxc6, black's bishop will develop and threaten the undefended pawn on e4.
a b c d e f g h
8 a8 rd b8 c8 qd d8 e8 kd f8 bd g8 h8 rd 8
7 a7 b7 bd c7 d7 pd e7 pd f7 pd g7 pd h7 7
6 a6 pd b6 c6 pd d6 nd e6 f6 nd g6 h6 6
5 a5 b5 pd c5 nl d5 e5 f5 g5 h5 pd 5
4 a4 b4 c4 d4 e4 pl f4 g4 h4 4
3 a3 b3 c3 bl d3 pl e3 nl f3 g3 pl h3 bl 3
2 a2 pl b2 pl c2 pl d2 ql e2 f2 g2 h2 pl 2
1 a1 b1 c1 kl d1 rl e1 f1 rl g1 h1 1
a b c d e f g h
No point in Nxb7. White's knight more active and in the game, while black's bishop is blocked off by pawns. Therefore the bishop is less valuable than the knight so the trade is not worth it.
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