Benoni Defense: Classical Variation, Argentine Counterattack

Before the first move

The Benoni Defense is a sharp, asymmetric opening where Black concedes a space advantage in exchange for dynamic counterplay on the queenside. In the Argentine Counterattack, you'll challenge White's central control by pinning the f3-knight, aiming to disrupt their coordination before they can launch a kingside pawn storm.

1. d4White

White starts with d4, a move that focuses on central control and long-term stability. It is the most popular alternative to the explosive e4, inviting a strategic battle.

1... Nf6Black · your move

Develop your knight to f6. This flexible move prevents White from immediately playing e4 and keeps 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, the hallmark of the Queen's Gambit family. This move increases central pressure and prepares to gain more space. White could also choose the London System with Bf4 or the Catalan with g3, but c4 is the most ambitious.

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

2... e6Black · your move

Push your pawn to e6. This move prepares to challenge the center and opens a path for your light-squared bishop, often leading toward Nimzo-Indian or Queen's Indian structures.

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

3. Nf3White

White develops the knight to f3, avoiding the complications of the Nimzo-Indian which occurs after Nc3. This move often leads to the Catalan if White later plays g3, or the Bogo-Indian if Black checks on b4.

Other paths here: g3 (Catalan Opening) · Qb3 (Indian Defense) · g4 (Indian Defense: Devin Gambit) · Bg5 (Indian Defense: Seirawan Attack)

3... c5Black · your move

Strike at the center with c5. You are inviting the Benoni structures, creating immediate tension and preparing to open the long diagonal for your dark-squared bishop.

Other paths here: d5 (Queen's Gambit Declined) · Ne4 (Indian Defense: Döry Indian) · a6 (Indian Defense: Dzindzi-Indian Defense) · Be7 (Neo-Indian: 3.Nf3 Be7)

4. d5White

White accepts the challenge and pushes to d5. This creates the characteristic Benoni pawn structure where White has a central wedge. The alternative e3 leads to much quieter, symmetrical positions.

Other paths here: e3 (Neo-Indian: Blumenfeld/Benoni, 4.e3)

4... exd5Black · your move

Capture the pawn on d5. You must clear this pawn to open the e-file and create the asymmetric pawn structure that fuels your queenside counterplay.

Other paths here: b5 (Blumenfeld Countergambit)

5. cxd5White

White recaptures with the c-pawn, establishing the standard Modern Benoni structure. White now has a three-to-two pawn majority in the center, while Black will look to use their majority on the queenside.

5... d6Black · your move

Move your pawn to d6. This essential move stops White from pushing e5 and prepares the development of your kingside while supporting the c5 pawn.

6. Nc3White

White develops the queen's knight to its most active square. From c3, the knight eyes the d5 pawn and prepares to support the center. White is now ready to build a full pawn center.

6... g6Black · your move

Push your pawn to g6. You are preparing to fianchetto your bishop to g7, where it will exert enormous pressure down the long h8-a1 diagonal.

7. e4White

White seizes the full center with e4. This is the Classical Variation. Alternatives include the Fianchetto Variation with g3 or the Knight's Tour Variation with Nd2, both of which are slower and more positional.

Other paths here: g3 (Benoni Defense: Fianchetto Variation) · Nd2 (Benoni Defense: Knight's Tour Variation) · Bg5 (Benoni Defense: Uhlmann Variation)

7... Bg7Black · your move

Fianchetto your bishop to g7. This piece is the soul of your position, providing defense for your king and eyeing the white queenside.

8. Be2White

White plays Be2, the most solid way to continue development in the Classical line. More aggressive players might try the Averbakh-Grivas Attack with Bg5, looking to disrupt Black's coordination immediately.

Other paths here: h3 (Benoni Defense: Classical Variation, New York Variation) · Bg5 (Benoni Defense: Classical Variation, Averbakh-Grivas Attack)

8... O-OBlack · your move

Castle your king to safety. With your king tucked away, you can now focus on your queenside expansion and challenging White's central dominance.

9. O-OWhite

White also castles, bringing the game into the main tabiya of the Classical Benoni. Both sides have completed their basic development and the real strategic battle begins now.

9... a6Black · your move

Push your pawn to a6. You are preparing the b5 expansion, which is your primary source of counterplay and space on the queenside.

Other paths here: Re8 (Benoni Defense: Classical Variation, Czerniak Defense)

10. a4White

White plays a4 to clamp down on the b5 square. By preventing Black from easily expanding on the queenside, White hopes to keep the initiative in the center and on the kingside.

10... Bg4Black · your move

Slide your bishop to g4. By pinning the knight to the queen, you create immediate pressure and prepare to trade off a key defender of the d4 and e5 squares.

Where you stand

The position is a classic Benoni struggle. White enjoys a space advantage and will aim to maneuver the knight from f3 to c4 via d2 to pressure d6. Black's plan involves trading the light-squared bishop for the knight on f3 to weaken White's central control, followed by the standard queenside expansion with maneuvers like Nbd7 and eventually pushing for b5 or f5 breaks.

• f3-c4 Route knight to c4 to pressure d6
• g4-f3 Trade bishop to weaken White's center
• b8-d7 Develop knight to support queenside play
• f1-e1 Centralize rook to support the e4 pawn