Queen's Indian: 4.Bg5

Before the first move

The Queen's Indian Defense is a sophisticated hypermodern opening where Black controls the center with pieces rather than pawns. By playing 4.Bg5, White chooses an aggressive, classical approach, pinning the knight on f6 to disrupt Black's coordination and challenge their control over the vital e4-square.

1. d4White · your move

Push your pawn to d4. This move claims central space, opens a path for your queen's bishop, and establishes a solid foundation for your queenside development. It is the most common way to start a closed game, aiming for long-term strategic control.

1... Nf6Black

Black replies with Nf6, preventing a full pawn center. This is the most common response to d4. While Black could try the Englund Gambit with e5 or the English Defense with b6, the knight move is the most respected and theoretically sound choice at the top level.

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

2. c4White · your move

Advance your pawn to c4. This is the standard follow-up to d4, putting pressure on the d5-square and preparing to develop your knight to c3. You are building a powerful pawn duo that controls the heart of the board.

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

Black plays e6, a solid move that prepares for central development. While Black could try the more aggressive Benoni with c5 or the King's Indian setup with g6, this move keeps the center compact and prepares to challenge White's setup more traditionally.

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

3. Nf3White · your move

Bring your knight to f3. This natural developing move controls the center and prepares for kingside castling. By choosing the knight move over Nc3, you avoid the complications of the Nimzo-Indian and steer the game toward a Queen's Indian structure.

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

3... b6Black

Black replies with b6, initiating the Queen's Indian Defense. Instead of the more direct d5, Black prefers to influence the center from the flank. Other common tries here include the Blumenfeld Gambit with c5 or the solid Be7, but b6 is the most thematic.

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. Bg5White · your move

Slide your bishop to g5. This creates an immediate pin on the f6-knight, making it harder for Black to control the e4-square. It is a direct and provocative way to challenge Black's setup, forcing them to address the pressure on their kingside.

Other paths here: Nc3 (Queen's Indian Defense: Kasparov Variation) · Bf4 (Queen's Indian Defense: Miles Variation) · a3 (Queen's Indian Defense: Petrosian Variation) · e3 (Queen's Indian Defense: Spassky System)

Where you stand

The position is rich with strategic tension. White has gained a lead in development and a nagging pin on f6, while Black will look to challenge that bishop with h6 or neutralize the pressure with Bb7 and Be7. The battle revolves around the e4 and d5 squares, with both sides having clear paths to a complex middlegame.

• g5-h4 Maintain the pin after h6
• b1-c3 Complete queenside development and control d5
• c8-b7 Fianchetto the bishop to pressure e4
• f8-e7 Break the pin and prepare castling