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Not to be confused with the Polish Opening that starts with 1. b4.

a b c d e f g h
8 a8 rd b8 nd c8 bd d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 c7 pd d7 pd e7 pd f7 pd g7 pd h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 pd c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 pl e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 pl d2 e2 pl f2 pl g2 pl h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 bl g1 nl h1 rl 1
a b c d e f g h
The Polish Defense.

The Polish Defense is an opening that starts with the moves

1. d4 b5

This opening got its name because it is the reverse of the Polish Opening, which starts with 1. b4.

Variations[]

2. e4 Bb7[]

a b c d e f g h
8 a8 rd b8 nd c8 d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 c7 pd d7 pd e7 pd f7 pd g7 pd h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 bl c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 pl e4 bd f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 pl d2 e2 f2 pl g2 pl h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 g1 nl h1 rl 1
a b c d e f g h
Position after 1. d4 b5, 2. e4 Bb7, 3. Bxb5 Bxe4

Usually, white will play e4 and black will fianchetto the queenside bishop to b7. White can take the b5 pawn with Bxb5 and black can take back with Bxe4. After that, white will either have to play f3, kicking out the bishop, or Nf3, otherwise the rook on h1 will be completely trapped after Bxg2. It is usually not recommended to capture the b5 pawn with the bishop since black will be better because he/she trades one of his/her side pawns for one of White’s central pawns. Instead white should play d5 or Bd3, defending the e4 pawn.

2. d5 Bb7[]

This is another response to the Polish Defense, except the d5 pawn is defended by the queen on d1. White can play e4 next, threatening to capture the b5 pawn, and black can defend it with a6. Or black can sacrifice the b5 pawn and instead take central space by developing the knight to f6. If white takes the b5 pawn, black can take white’s e4 pawn. If white pushes the e-pawn to e5 instead, black can take the d5 pawn with the knight which the queen can’t take the d5 knight anymore since it is defended by the b7 bishop.

2. e3 Bb7, 3. Bxb5?? Bxg2![]

This is a blunder because White’s rook is completely trapped, and there is absolutely no way to save it.

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