Benko Gambit: 5.bxa6 g6

Before the first move

The Benko Gambit is a provocative defense where Black sacrifices a pawn early to secure long-term positional pressure on the queenside. Unlike many gambits that aim for a quick checkmate, Black here seeks permanent open files and a powerful fianchettoed bishop to haunt White's position for the entire game.

1. d4White · your move

Move your pawn to d4. This central strike claims space and opens paths for your queen and dark-squared bishop. It is the foundation of many strategic openings, forcing Black to decide immediately how to contest the center.

1... Nf6Black

Black replies Nf6, a flexible move that controls the e4 square. While d5 is a solid alternative, Nf6 often leads to more complex systems like the King's Indian or the Benoni. Other rare tries like the Englund Gambit with e5 or the English Defense with b6 are much less common.

Other paths here: Na6 (Australian Defense) · g5 (Borg Defense: Borg Gambit) · b6 (English Defense) · e5 (Englund Gambit)

2. c4White · your move

Push your pawn to c4. This classic follow-up increases your control over the d5 square and prepares to bring your knight out behind the pawn. You are building a formidable central presence that Black must challenge.

Other paths here: f4 (Canard Opening) · g4 (Indian Defense: Gibbins-Weidenhagen Gambit) · e4 (Indian Defense: Omega Gambit) · d5 (Indian Defense: Pawn Push Variation)

2... c5Black

Black counters with c5, the hallmark of the Benoni Defense. This creates immediate tension. While Black could play e6 to enter a Queen's Gambit Declined or b6 for a Queen's Indian, the move c5 is the most combative way to unbalance the game.

Other paths here: g5 (Indian Defense: Medusa Gambit) · b5 (Indian Defense: Pyrenees Gambit) · a6 (Indian: 2.c4 a6) · Nc6 (Mexican Defense)

3. d5White · your move

Push your pawn to d5. By bypassing the challenge, you gain a significant space advantage in the center and cramp Black's development. This move defines the Benoni structure, where you hold the middle while Black seeks counterplay on the wings.

Other paths here: Nf3 (English Opening: Symmetrical Variation, Anti-Benoni Variation) · e3 (Benoni: 2...c5 3.e3) · dxc5 (Benoni: 3.dxc5)

3... b5Black

Black plays b5, launching the Benko Gambit. This is a profound positional sacrifice. Instead of this, Black often plays d6 to enter the Modern Benoni or e5 for the Czech Benoni, but b5 is the most specialized and feared response.

Other paths here: e5 (Benoni Defense: Czech Benoni Defense) · d6 (Benoni Defense: Hromádka System) · a6 (Benoni: 3.d5 a6) · g6 (Benoni: 3.d5 g6)

4. cxb5White · your move

Capture the pawn on b5. Accepting the gambit is the most critical test. You take the material and challenge Black to prove they have enough compensation for the missing pawn. Be prepared for heavy pressure on your queenside soon.

Other paths here: Bg5 (Benko Gambit Declined: Bishop Attack) · e4 (Benko Gambit Declined: Hjørring Countergambit) · Nf3 (Benko Gambit Declined: Main Line) · f3 (Benko Gambit Declined: Pseudo-Sämisch)

4... a6Black

Black plays a6, the standard continuation of the gambit. Black wants to clear the way for their pieces. If White captures, Black will eventually have the a and b-files for the rooks and a powerful diagonal for the bishop on g7.

5. bxa6White · your move

Capture on a6. You have accepted the full Benko Gambit. You are now up a pawn, but you must develop carefully. Black will have very active pieces, so your goal is to consolidate and eventually use your extra material in the endgame.

Other paths here: f3 (Benko Gambit Accepted: Dlugy Variation) · e3 (Benko Gambit Accepted: Modern Variation) · b6 (Benko Gambit Accepted: Pawn Return Variation) · Nc3 (Benko Gambit: Zaitsev System)

5... g6Black

Black plays g6, preparing to put the bishop on the long diagonal. This is a key move in the Benko. Black could also capture immediately with Bxa6, but g6 is a sophisticated way to delay the capture and prioritize the kingside's safety first.

Other paths here: Bxa6 (Benko Gambit: 5.bxa6 Bxa6)

Where you stand

The position is a classic Benko struggle. White is a pawn up but faces a long, difficult defense against Black's coordinated pieces and open files. White must focus on central control and safe development, while Black will relentlessly pressure the a2 and b2 squares, hoping the positional pressure outweighs the material deficit.

• f1-g2 Fianchetto the bishop to bolster the kingside
• f8-g7 Place the bishop on the long diagonal
• b1-c3 Develop the knight to defend the center
• a8-a6 Recapture the pawn and activate the rook
• e1-g1 Castle kingside to secure the monarch