King's Indian Defense: Fianchetto Variation, Classical Main Line

Before the first move

The King's Indian Defense is a hypermodern masterpiece where you allow White to build a massive pawn center only to strike back later. In the Fianchetto Variation, White chooses a more solid, positional approach, aiming to neutralize your powerful dark-squared bishop by placing their own on g2.

1. d4White

White starts with d4, a classical move that immediately fights for the center. Black has many ways to respond, but usually chooses either the solid d5 or the more flexible Nf6, which we will see here.

1... Nf6Black · your move

Develop your knight to f6. This is the most flexible response to d4, preventing White from immediately playing e4 and 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, the standard follow-up to d4. Other options like the London System or the Trompowsky Attack are popular, but c4 leads to the richest main-line 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... g6Black · your move

Push your pawn to g6. This prepares to fianchetto your bishop to g7, where it will exert long-range pressure along the h8-a1 diagonal, a hallmark of the King's Indian.

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

3. Nf3White

White plays Nf3, a very solid choice. White could also play Nc3 immediately or opt for the Saemisch Variation with f3, but the knight move keeps the most options on the table.

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... Bg7Black · your move

Fianchetto your bishop to g7. This piece is your most important asset in the King's Indian. It defends your king and eyes the center from a distance, waiting for the right moment to strike.

Other paths here: d5 (Neo-Grünfeld Defense: with Nf3) · d6 (King's Indian: 3.Nf3 d6)

4. g3White

White plays g3, entering the Fianchetto Variation. This is considered one of the most reliable ways to face the King's Indian, avoiding the wild tactical complications of the Four Pawns Attack.

Other paths here: b4 (King's Indian Defense: Santasiere Variation) · b3 (King's Indian: b3 System)

4... O-OBlack · your move

Castle your king to safety. In the King's Indian, your king is usually very secure behind the fianchettoed bishop. Getting this done early allows you to focus on the coming central break.

5. Bg2White

White plays Bg2, completing the double-fianchetto setup. The two kingside bishops now stare at each other across the board, setting the stage for a deep positional struggle.

5... d6Black · your move

Move your pawn to d6. This modest move is essential; it stops White from pushing d5 too easily and prepares your own central pawn breaks, typically e5 or c5.

Other paths here: c6 (Neo-Grünfeld Defense: Classical Variation, Original Defense) · d5 (Neo-Grünfeld Defense: Delayed Exchange Variation)

6. O-OWhite

White castles, matching Black's safety. White's position is very harmonious, with no immediate weaknesses for Black to exploit. The battle now turns to the queenside and the center.

6... Nbd7Black · your move

Develop your knight to d7. This is a flexible square for the knight, supporting the e5 pawn break while keeping the long diagonal open for your bishop on g7.

Other paths here: c5 (King's Indian Defense: Fianchetto Variation, Yugoslav System) · c6 (King's Indian: Fianchetto without Nc3, 6...c6) · Nc6 (King's Indian: Fianchetto without Nc3, 6...Nc6)

7. Nc3White

White plays Nc3, finally developing the last minor piece. White could have tried Qc2 first to avoid certain lines, but Nc3 is the most direct way to control the center.

Other paths here: Qc2 (King's Indian: Fianchetto without Nc3, 6...Nbd7 7.Qc2)

7... e5Black · your move

Push your pawn to e5. This is the critical break in the King's Indian. You are challenging White's center and opening lines for your pieces, even if it allows White to close the center.

Other paths here: a6 (King's Indian Defense: Fianchetto Variation, Hungarian Variation)

8. e4White

White plays e4, accepting the challenge in the center. The position now resembles a King's Indian Classical structure, but with the bishops fianchettoed, the game is more about small improvements.

8... c6Black · your move

Move your pawn to c6. This move blunts the power of White's bishop on g2 and prepares a retreat for your queen to b6 or c7, while also supporting the d5 square.

9. h3White

White plays h3, a deep positional move. It stops any annoying Ng4 or Bg4 ideas from Black and prepares for a slow squeeze. Both sides have finished their primary development.

Where you stand

The position is a masterpiece of tension. White enjoys a slight space advantage and a very solid king, while Black has a flexible setup ready to strike with a future d5 or f5. The battle will revolve around White trying to squeeze Black on the queenside while Black looks for a tactical breakthrough in the center or a sudden kingside attack.

• d7-b6 Knight maneuvers to support the queenside
• f6-e8 Knight retreats to prepare the f5 break
• c3-d5 Knight eyes the central d5 hole
• c1-e3 Bishop develops to control the center