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Chess Opening Theory/1. d4/1...Nf6/2. c4/2...c5/3. d5/3...b5/4. cxb5

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Benko gambit
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Position in Forsyth-Edwards Notation (FEN)

rnbqkb1r/p2ppppp/5n2/1PpP4/8/8/PP2PPPP/RNBQKBNR

Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5
ECO code: A57
Parent: Benko gambit
Responses: 4...a6

4. cxb5

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White accepts the initial pawn.

The "real" gambit now follows with 4...a6, where White can take another pawn but Black can only recover one. In exchange for being a pawn down, Black hopes to capitalise on the open a- and b-files and a good structure in the form of a single large pawn island. 4...a6 is essentially the only move.

Note that 4...Qa5+? does not recover the pawn as 5. Nc3 interposes check and defends b5.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5

4 5 6 7
...
a6		 bxa6
Bxa6		 Nc3
d6		 Nf3
g6

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References

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v · t · e
Chess Opening Theory
1. e4 e5
Open game
2. Nf3
With 2...Nc6:
  • Four knights (
    )
  • Italian game (
    )
  • Spanish game (
    )

With other 2nd moves:

2. Other

1. e4 c5
Sicilian defence
2. Nf3 · Open Sicilian
With 2...Nc6:
With 2...d6:
With 2...e6:
With other 2nd moves:
Anti-Sicilians
1. e4 ...other:
Caro-Kann
French
Other


1. d4 d5
Closed game
2. c4
2. Nc3
2. other
1. d4 Nf6
Indian defence
2. c4
With 2...e6:

With 2...g6:

With other 2nd moves for Black:
2. Nf3
2. other:
1. d4 f5
Dutch defence
1. d4 ...other:
Flank
Unorthodox
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