Benko Gambit Accepted: Fully Accepted Variation

Before the first move

The Benko Gambit is a provocative strategic sacrifice where Black gives up a queenside pawn early to secure long-term pressure. Unlike many gambits that aim for a direct kingside attack, the Benko focuses on creating permanent open files for the rooks and a powerful fianchettoed bishop on g7.

1. d4White

White plays d4, seizing space and preparing to develop the queenside. This move invites a variety of responses from Black, including the symmetrical d5 or the hypermodern Nf6, which we will see next.

1... Nf6Black · your move

Develop your knight to f6. This flexible move controls the e4 square, preventing White from immediately occupying the center with a second pawn, while keeping your options open for several different defensive setups.

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

2. c4White

White plays c4, establishing the Queen's Gambit structure. While this is the main line, White sometimes tries the London System style with f4 or the Indian Defense: Tartakower Attack with g3 to avoid the main theoretical battles.

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 · your move

Strike at the center with c5. You are challenging White's d4 pawn immediately and offering a trade. If White pushes past, you will have successfully lured their pawn forward to create a Benoni-style structure.

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

3. d5White

White plays d5, accepting the challenge and entering the Benoni complex. White could have played Nf3 to keep things symmetrical or e3 to stay solid, but pushing forward is the most ambitious and testing continuation.

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

3... b5Black · your move

Sacrifice your pawn by pushing to b5. This is the defining move of the Benko Gambit. You are offering material to open the a and b-files, aiming for long-term pressure against White's queenside pawns.

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

White plays cxb5, fully accepting the gambit. White has many alternatives here, such as declining with Nf3 or the Bishop Attack with Bg5, but taking the pawn is the most critical test of Black's idea.

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 · your move

Offer another pawn by moving to a6. This is the second half of the Benko plan. You want White to take this pawn so that your rooks will have two completely open files to attack the queenside later.

5. bxa6White

White plays bxa6, entering the Fully Accepted variation. While White is ahead in material, Black will soon recapture on a6 with the bishop. White could also try the Modern Variation with e3 or the Zaitsev System with Nc3.

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)

Where you stand

The battle lines are drawn. Black will recapture on a6 and fianchetto the king's bishop to g7, creating massive pressure down the long diagonal. White must develop carefully, often using the e4 and Nc3 setup, to neutralize Black's activity and eventually make the extra pawn count in the endgame.

• f8-g7 Fianchetto the bishop to pressure the long diagonal.
• a8-a6 Recapture on a6 to open the a-file for rooks.
• b1-c3 Develop the knight to defend the d5 pawn.
• e2-e4 Establish a strong pawn center to blunt the g7 bishop.
• e8-g8 Castle kingside quickly to complete development.