King's Indian Defense

Key ideas for both sides

Plans and pawn structure

Most King's Indian middlegames start with the closed center after ...e5 and d5. Then the board splits. White attacks on the queenside with c5, b4 and a knight heading for c4, aiming to open the c-file. Black attacks on the kingside with ...f5, ...f4 and ...g5, bringing pieces toward White's king. The race decides the game. If White avoids d5, Black often trades on d4 and uses the g7 bishop and the e-file against e4.

What the King's Indian Defense is about

The King's Indian Defense is a hypermodern opening. After 1.d4 Nf6 2.c4 g6 3.Nc3 Black prepares ...Bg7, ...d6 and short castling, and lets White take the center with e4. The idea is that a big center can also be a target. Once Black's king is safe, the pawn breaks ...e5 and ...c5 hit White's center, and the g7 bishop adds pressure along the long diagonal.

From this position, 29811 games gave White 51.2%, a fair result for Black. The engine's top move is 3...d5, which leaves the King's Indian for a Grünfeld type position. The true King's Indian moves, 3...Bg7 and 3...d6, are rated a bit better for White, but they lead to rich, fighting games where practical skill counts most.

The main variations

The Normal Variation, 3...Bg7 4.e4, is the gateway to most of the theory, with 9491 games and White scoring 50%. White grabs the center and Black continues with ...d6 and short castling.

The Orthodox Variation, 5.Nf3 O-O 6.Be2, is the main line. White develops naturally and waits for ...e5, then usually chooses between keeping the tension and closing with d5. The Petrosian Variation, 6...e5 7.d5, closes the center at once and sends the game into the familiar race: White on the queenside, Black on the kingside.

The Sämisch Variation, 5.f3, supports e4 with a pawn and prepares Be3 and Qd2. White can castle long and push the kingside pawns, so the game is often an opposite-side attack.

The Four Pawns Attack, 5.f4, is the most ambitious try. White puts pawns on c4, d4, e4 and f4 and hopes to push Black back with e5. Black hits back with ...c5 and quick piece play against the overextended center.

The Fianchetto Variation, 3.Nf3 Bg7 4.g3, is the quiet option. White puts the bishop on g2 to face Black's own bishop, and the engine rates the game close to level. The plans are slower and Black's kingside attack is harder to start.

Typical plans for White

White's choices depend on the system, but a few ideas run through all of them.

• Close the center and attack on the queenside. After ...e5, d5 locks the center. Then c5, b4, a knight heading for c4 and a rook on the c-file target Black's queenside. The engine lines with 7.d5 against ...c5 show the same space-gaining idea.
• Slow down Black's attack. Moves like f3, a bishop on e3 and a knight on d3 or e1 help meet ...f5 and ...f4.
• Use the Sämisch attack. With f3, Be3 and Qd2, White can play Bh6 to trade Black's best piece and push h4 and h5 against the king.
• Keep the center under control. If Black trades on d4, White's pieces must be ready to take back and use the extra space.

Typical plans for Black

Black's plans follow from the pawn breaks. With ...e5, Black fights for the dark squares in the center. If White closes with d5, Black's knight leaves f6, often for e8 or d7, and the f-pawn goes to f5. Then ...f4, ...g5 and ...g4 build a pawn storm, and the pieces follow to the kingside. With ...c5, Black hits d4 from the other side. If White plays d5, the structure looks like a Benoni and Black plays on the queenside with ...b5 or along the e-file.

• Keep the g7 bishop. It is Black's best defender and attacker.
• Time the ...f5 break well. Played too early, it leaves e6 and e5 weak.
• Against the Sämisch, queenside play with ...c6 or ...c5 and ...b5 is often faster than a kingside attack.

Mistakes club players make

• Black attacking without the pieces. A pawn storm with ...g5 and ...g4 needs knights and a rook behind it, or it just weakens Black's king.
• White ignoring the kingside. Racing on the queenside while Black's pawns arrive on f4 and g4 is how many White players get mated.
• Trading the g7 bishop. Without it, the dark squares around Black's king are full of holes.
• Releasing the tension at the wrong time. A trade on d4 by Black, or on e5 by White, often gives the other side free piece play.
• Overpushing the center as White. In the Four Pawns Attack, e5 before development is done can leave the pawns as targets.

Who should play it

The King's Indian suits Black players who want to play for a win against 1.d4 and are comfortable with sharp, double-edged positions. Black gives White space on purpose, so you need to trust your counterattacks and know the standard plans.

For White, the opening rewards clear plans and good timing. The Nf3 and Be2 system and the Sämisch give the most direct fights, while the Fianchetto Variation suits players who prefer to keep things calm.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.32: a slight edge for White. Its three top choices for Black:

1. +0.32 3...d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4
2. +0.48 3...Bg7 4.e4 d6 5.Be2 O-O 6.Be3
3. +0.51 3...d6 4.e4 Bg7 5.Be2 O-O 6.Be3

Pawns, from White's side.

How it scores on lichess

29,811 rated lichess games reached this position; White scored 51.2%.

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Variations of the King's Indian Defense

• Normal Variation3...Bg7 · 9,491 games
• Grünfeld Defense3...d5 · 6,634 games
• Exchange Variation, Sokolsky Variation3...d5 · rare
• Orthodox Variation, Classical System, Kozul Gambit3...Bg7 · rare

How to play against it

As White, choose a system that fits your style and learn its plans. The main line with Nf3 and Be2 is the most natural, the Sämisch with f3 suits players who like a solid center and opposite-side attacks, and the Fianchetto with g3 keeps the game calm. Do not let Black's kingside attack start unchallenged; your queenside play must be fast.

Full guide: how to beat the King's Indian Defense

Questions

Updated October 2026. Sources and method.