ChessScreenshot

Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 · A57–A59

Part of Benoni Defense

Starting positionWhite to move

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A pawn buys lasting queenside pressure

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The idea

Black sacrifices a queenside pawn for half-open a- and b-files and lasting pressure on White's queenside, often extending into the endgame.

Main line: 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.g3 Bg7 9.Bg2 O-O

What White wants

  • Return the pawn at the right moment to complete development
  • Defend b2 and hold the centre
  • Assess endgames carefully: the extra pawn must outweigh lasting file pressure

What Black wants

  • Activate rooks on the half-open a- and b-files after development
  • Fianchetto and coordinate pressure against b2 and the centre
  • Maintain activity and recover material if White offers a useful simplification

Key idea

Understand this and the moves stop needing to be memorised.

A pawn buys lasting queenside pressure

Black's a- and b-pawns have disappeared, but White's a2 and b2 pawns remain: the files are half-open, not fully open. Developing the rooks and g7 bishop can pressure those pawns. Queen exchanges do not automatically remove that compensation; rook activity matters in endgames too.

Common mistake

Simplifying automatically because White is a pawn ahead. Black's file pressure can survive queen trades and become stronger in a rook endgame. Returning material is an option, not an obligation: compare king safety, b2 defence and rook activity.

Representative position

The position this opening is aiming at. Copy the FEN, or open it in the analysis board and let the engine tell you what it is worth.

rn1q1rk1/4ppbp/b2p1np1/2pP4/8/2N2NP1/PP2PPBP/R1BQK2R w KQ - 3 10

Analyze this position

Related openings

Benoni Defense1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 · A43–A44, A56–A79Black plays ...c5 against 1.d4 and accepts a locked, asymmetric structure where the fight is over the d5 pawn and the dark squares.Modern Benoni1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 · A60–A79Black fianchettoes and contests the centre through the half-open e-file, while White uses d5–e4 space and watches the queenside ...b5 break.Benoni: Fianchetto Variation1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 · A62–A64White meets the Modern Benoni with g3 and Bg2, developing the king's bishop behind a sheltered kingside rather than choosing the usual Be2 setup.Blumenfeld Gambit1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 · E10Black offers the b-pawn to build a broad pawn centre, not the Benko's queenside-file pressure. In the accepted line, ...fxe6 and ...d5 give Black central space and a half-open f-file.