Benko Gambit: 5.bxa6 Bxa6

Before the first move

The Benko Gambit is a provocative strategy where Black sacrifices a pawn early to gain long-term pressure on the queenside. Unlike many gambits, Black's compensation isn't based on a direct attack, but on open files and active pieces that can haunt White throughout the endgame. White must play precisely to consolidate the extra material.

1. d4White · your move

Push your pawn to d4. This move claims the center and opens paths for your queen and dark-squared bishop. It is the foundation of many strategic openings, setting the stage for a complex battle where you control the space.

1... Nf6Black

Black replies Nf6, the most popular way to meet the Queen's Pawn Opening. This move avoids the immediate symmetry of d5 and leads to various Indian Defenses. Other common tries include the solid e6, the sharp Englund Gambit with e5, or the English Defense with b6.

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

2. c4White · your move

Move your pawn to c4. This is the standard follow-up to d4, putting further pressure on the center and preparing to develop your knight to c3. You are building a powerful pawn duo that restricts Black's central influence.

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, a sharp move that characterizes the Benoni Defense. Black wants to trade a wing pawn for a central pawn or provoke a pawn push. Alternatives like e6 or the King's Indian setup with g6 are also very common here.

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 on c5, you seize more space and create a wedge in Black's position. This move defines the Benoni structure, where you have a space advantage while Black seeks counterplay.

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 e6 to challenge the d5 pawn directly, but b5 is the most aggressive queenside plan.

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. It is usually best to accept the gambit and dare Black to prove their compensation. By taking the pawn, you challenge Black's plan and force them to commit more resources to their queenside pressure.

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 follow-up that defines the Benko. Black is determined to clear the queenside pawns to create open highways for their heavy pieces. If White ignores this, Black will simply capture on b5 and equalize the material with a good position.

5. bxa6White · your move

Take the pawn on a6. Accepting the second pawn is the most principled way to play. While it helps Black's development, it leaves you with a solid extra pawn that Black will have to work very hard to recover.

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... Bxa6Black

Black recaptures with Bxa6, completing the initial gambit phase. Black has sacrificed a pawn but has gained incredible piece activity. The main alternative is g6, delaying the capture to fianchetto the other bishop first, but Bxa6 is the most immediate and active choice.

Other paths here: g6 (Benko Gambit: 5.bxa6 g6)

Where you stand

The battle lines are drawn. White is a pawn up but faces a long, difficult defense against Black's pressure on the a and b-files. White's main goal is to develop the kingside and castle, often manually if the f1-bishop is traded. Black will fianchetto the dark-squared bishop on g7 and use the open files to tie White down to the defense of the a2 and b2 pawns.

• b1-c3 Develop the knight to challenge the center
• g7-g6 Prepare the powerful dark-squared bishop fianchetto
• f1-g2 Prepare to castle and protect the king
• a8-a6 Rook pressure along the newly opened a-file