Gruenfeld: 4.g3

Before the first move

The Grünfeld Defense is a dynamic counter-attacking opening where Black allows White to build a large pawn center only to strike back at it immediately. In this Fianchetto Variation, White adopts a solid, long-term positional approach by preparing to develop the light-squared bishop to g2, aiming for pressure down the long diagonal.

1. d4White · your move

Push your pawn to d4 to claim space in the center and open lines for your queen and dark-squared bishop. This move establishes a foothold in the heart of the board and dictates the early pace of the game.

1... Nf6Black

Black replies with Nf6, the most resilient response to the queen's pawn. This move keeps the game fluid, avoiding the immediate commitment of a pawn move like e6 or d5. Other choices like the Englund Gambit or the English Defense lead to much sharper, more eccentric positions.

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 move challenges for the center from the flank and prepares to develop your knight behind the pawn. It is a cornerstone of queen's pawn openings, putting pressure on d5 and gaining space.

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

2... g6Black

Black plays g6, signaling an intention to control the long diagonal. This move is the gateway to the King's Indian Defense. While Black could play e6 to head toward a Queen's Gambit Declined or b6 for a Queen's Indian, g6 is the most provocative and energetic choice.

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

3. Nc3White · your move

Develop your knight to c3. This move puts immediate pressure on the d5 square and prepares for a massive pawn center. It is the most natural and aggressive way to continue your development in this structure.

Other paths here: d5 (Indian Defense: Anti-Grünfeld, Advance Variation) · f3 (Indian Defense: Anti-Grünfeld, Alekhine Variation) · h4 (Indian Defense: Anti-Grünfeld, Basman-Williams Attack) · g3 (King's Indian Defense: Fianchetto Variation, Immediate Fianchetto)

3... d5Black

Black plays d5, the defining move of the Grünfeld. If Black had played Bg7 instead, the game would have remained in King's Indian territory. By playing d5, Black forces the issue in the center and invites White to make a structural decision.

Other paths here: Bg7 (King's Indian: 3.Nc3 Bg7) · c5 (King's Indian: 3.Nc3 c5) · c6 (King's Indian: 3.Nc3 c6) · d6 (King's Indian: 3.Nc3 d6)

4. g3White · your move

Slide your pawn to g3. You are choosing the Fianchetto Variation, opting for a solid and professional setup. You will place your bishop on g2 to neutralize Black's own bishop and fight for the long-term control of the center.

Other paths here: e3 (Gruenfeld: 4.e3) · g4 (Grünfeld Defense: Gibbon Gambit) · f3 (Grünfeld Defense: Lutikov Variation) · Bg5 (Grünfeld Defense: Stockholm Variation)

Where you stand

The game now enters a deep positional struggle. White will develop the bishop to g2 and castle kingside, while Black will likely fianchetto on g7 and look to undermine White's center with moves like c5. The battle revolves around the long diagonal and whether White's space advantage outweighs Black's piece activity and pressure on the d4 pawn.

• f1-g2 Fianchetto the bishop to control the diagonal.
• e1-g1 Castle kingside to secure the king.
• f8-g7 Fianchetto the bishop to pressure d4.
• c7-c5 Strike at the center with c5.