King's Indian Attack: Keres Variation

Before the first move

The King's Indian Attack is a flexible setup where White prioritizes a kingside fianchetto and a solid structure. In the Keres Variation, Black challenges this immediately by developing the light-squared bishop early to pin or trade for White's knight. This leads to a strategic battle where White seeks a space advantage while Black aims for active piece play.

1. Nf3White · your move

Develop your knight to f3. This flexible move controls the center and prepares for a kingside fianchetto without committing your central pawns too early. It keeps Black guessing whether you will play a Reti, a Catalan, or the King's Indian Attack.

1... d5Black

Black replies d5, establishing a firm presence in the center and challenging White's control. While Nf6 is the most common alternative, d5 is the hallmark of the Classical Variation. Black could also try sharper lines like the Herrstrom Gambit with g5 or the Mustang Defense with Nc6.

Other paths here: f6 (Zukertort Opening: Arctic Defense) · h6 (Zukertort Opening: Basman Defense) · Nc6 (Zukertort Opening: Black Mustang Defense) · f5 (Zukertort Opening: Dutch Variation)

2. g3White · your move

Push your pawn to g3. This prepares to fianchetto your bishop on g2, where it will exert long-range pressure across the h1-a8 diagonal. This move is the foundation of the King's Indian Attack, though you could also try the Nimzo-Larsen with b3 or the Tennison Gambit with e4.

Other paths here: b3 (Nimzo-Larsen Attack: Classical Variation) · e3 (Reti: 1...d5 2.e3) · b4 (Reti: Santasiere's folly) · e4 (Reti: Tennison/Zukertort Gambit)

2... Bg4Black

Black plays Bg4, the Keres Variation. This active move puts immediate pressure on the f3 knight and prepares to trade it if White plays Bg2. Other popular setups for Black include the Neo-Gruenfeld with Nf6 or the Omega-Delta Gambit with e5, but Bg4 is the most direct way to challenge White's kingside structure.

Other paths here: g6 (King's Indian Attack: Double Fianchetto) · e5 (King's Indian Attack: Omega-Delta Gambit) · c5 (King's Indian Attack: Sicilian Variation) · Nc6 (Reti: KIA)

Where you stand

The position is balanced but rich in strategic depth. White will typically continue with Bg2 and d3, aiming for an eventual e4 break to challenge the center. Black often plays e6 and c6 to bolster the d5 pawn, creating a solid wall that White must find a way to penetrate while managing the pressure on the f3 knight.

• f1-g2 Fianchetto the bishop to pressure the long diagonal.
• d2-d3 Prepare the e4 pawn break to challenge the center.
• e7-e6 Solidify the center and open lines for the dark bishop.
• c7-c6 Support the d5 pawn and prepare queen development.
• g4-f3 Trade the bishop to weaken White's kingside control.