The King’s Indian Defence: plans and pawn structures

The King’s Indian Defence is a fighting answer to 1.d4. Black does not try to stop White from building a big centre. Instead Black develops quickly, castles, and then attacks that centre from the side. If you like dynamic positions where both players have clear plans, it is one of the most rewarding openings you can learn.

The set-up

Black’s pieces go to the same squares in almost every line: …Nf6, …g6, …Bg7, …d6 and …O-O. A standard move order is 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O. White now has pawns on c4, d4 and e4, a lot of space and easy development. Black has a safe king and a bishop on g7 aimed at the long diagonal, waiting for the centre to open.

The idea is hypermodern: let White occupy the centre, then challenge it with pawn breaks. Black has two main ones, …e5 and …c5, and choosing between them is the first strategic decision in the King’s Indian.

Striking back with …e5

The most common break is …e5, which hits d4 directly. After 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 White has three main choices:

• 7.O-O keeps the tension. Black often answers 7…Nc6, inviting d5.
• 7.dxe5 dxe5 8.Qxd8 Rxd8 is the Exchange Variation. The queens come off early and the position is symmetrical, so it suits White players who want a quiet game. Black is fine but has to play patiently.
• 7.d5 closes the centre at once and leads to the structure described below.

Black can also release the tension with …exd4. After 7.O-O exd4 8.Nxd4 Re8 9.f3 the centre is open, the bishop on g7 comes to life and Black plays against the e4-pawn with pieces. This is a respectable choice, but Black must be active, because White’s extra space counts for more in an open position.

The closed centre: kingside against queenside

The structure everybody associates with the King’s Indian arises when White pushes d5. A famous main line is 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7. The centre is locked, and each side attacks on the wing where its pawn chain points.

Black’s plan

Black’s chain d6–e5 points towards the kingside, so Black attacks there. The knight on f6 moves away, usually to d7 or e8, to free the f-pawn. Then comes …f5, often followed by …f4 to gain space, and later …g5–g4 with the pieces joining in against the white king. A typical start is 9.Ne1 Nd7 10.Nd3 f5.

White’s plan

White’s chain e4–d5 points towards the queenside, so White attacks there with c5, b4 and a rook on the c-file, aiming at c7 and the d6-pawn. Moves such as Nd3 and f3 prepare the c5 break and also slow down Black’s kingside play.

These positions are a race. Black usually gives up something on the queenside to reach the white king, and White hopes to break through before the attack arrives. Counting tempi and knowing the typical manoeuvres matters more here than memorising long lines.

Striking back with …c5

The second break, …c5, attacks d4 from the other side. If White answers d5, the centre takes on a Benoni-like shape: Black has a queenside pawn majority, the g7-bishop gains strength along the long diagonal, and Black’s play comes on the queenside with …a6 and …b5 rather than with …f5. If you enjoy that kind of position, the Benoni Defence is a natural next step.

The Sämisch: 5.f3

The Sämisch Variation, 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3, is one of White’s most ambitious tries. The f3-pawn supports e4 like a rock and stops …Ng4 from hitting the bishop on e3. White often follows with Qd2 and queenside castling, then attacks on the kingside with g4 and h4–h5, aiming to open the h-file and exchange Black’s g7-bishop with Bh6.

The cost is that f3 takes the natural square from the g1-knight, which has to go to e2, and White’s development is slower. Black has several good answers:

• 6…e5, striking at the centre as usual. If 7.d5, Black prepares …f5 or …c6.
• 6…c5, hitting d4 at once and often offering a pawn for open lines on the queenside.
• 6…Nc6 with …a6, …Rb8 and …b5, as in 7.Nge2 a6 8.Qd2 Rb8, opening the queenside fast in case White castles there.

The general rule holds: if White castles queenside, Black should attack there quickly with pawns, because the slower side in a race of opposite-side attacks usually loses.

Where to start

Learn the set-up first, then one main line after …e5 and a plan against the Sämisch. Once you know which wing you are supposed to attack, the King’s Indian becomes much easier to play.

Open the King’s Indian Defense and the Sämisch Variation on TheoryChess and play them against Stockfish, with an explanation behind every move. Spaced repetition brings back the lines you miss, and the King’s Indian quiz shows which positions you really know.