Queen's Indian Defense
The Queen's Indian Defense arises after 1.d4 Nf6 2.c4 e6 3.Nf3 b6, where Black prepares ...Bb7 to control the long diagonal and the e4 square. White wants to build a full center with Nc3 and e4, while Black keeps that square under watch with pieces instead of pawns.
- Moves
- 1.d4 Nf6 2.c4 e6 3.Nf3 b6
- ECO
- E12
- Engine
- +0.35 · a slight edge for White (Stockfish 17.1, depth 20)
- Played
- 2,822 games in our lichess sample
- White scores
- 52.4%
Key ideas for both sides
White
- Fianchetto with g3 and Bg2 to oppose the b7 bishop on the long diagonal and blunt its hold on e4.
- Prepare the e4 push with Nc3 and Qc2; if White gets pawns on c4, d4 and e4 safely, Black is short of space.
- Use a3 to stop ...Bb4, so the c3 knight cannot be pinned and e4 stays possible.
- Against ...Ne4, play Bd3 or Qc2 and challenge the knight before Black supports it with ...f5.
Black
- Play ...Bb7 and ...Ne4 to put a piece on e4 before White can play the pawn there.
- Check with ...Bb4+ to trade the dark-squared bishops, as in the top engine line after Bd2.
- Free the position with ...d5 or ...c5 once development is done, so the center does not get locked against you.
- In the fianchetto lines, ...Ba6 hits the c4 pawn and makes White spend a move defending it.
Plans and pawn structure
The whole opening turns on e4. In the fianchetto lines White castles, plays Nc3 and Qc2 and tries to push e4, while Black answers with ...Be7, ...O-O, ...d5 or ...Ne4 to keep the square blocked. In the 4.a3 and 4.Nc3 lines the play is sharper, because White is closer to e4 and Black often has to strike with ...d5 or ...Bb4 and ...Ne4. Once the center settles, Black's play usually comes from ...c5, and White's from a well-timed e4 or a queenside space grab.
What the Queen's Indian is about
After 1.d4 Nf6 2.c4 e6 3.Nf3 b6 Black prepares to put the light-squared bishop on b7. White's 3.Nf3 avoids the Nimzo-Indian pin with ...Bb4, so Black looks for a different way to fight for the key square: e4. The b7 bishop, the f6 knight and sometimes a pawn on f5 all point at e4.
White wants to play e4 with pawns on c4, d4 and e4 and squeeze Black for space. Black wants to stop that and later free the game with ...d5 or ...c5. Across 2822 games from this position White scored 52.4%, and the engine sees only a small edge for White after 4.g3, 4.a3 or 4.Nc3.
The main variations
The Kasparov Variation, 4.Nc3, is the most played reply. White develops toward e4 and lets Black pin with ...Bb4. The engine line runs 4...Bb4 5.Qc2 Bb7 6.e3 Ne4 7.Bd3 f5, a direct fight for e4. White scored 50% in it.
The Fianchetto Variation, 4.g3, is the engine's first choice. White prepares Bg2 to meet the b7 bishop on the long diagonal. Here White scored 56.3%, the best result among the main lines. After 4...Bb7 5.Bg2 Black chooses between the Classical Variation with ...Be7 and O-O and the Capablanca Variation, 5...Bb4+, which trades off the dark-squared bishops.
The Kasparov-Petrosian Variation, 4.a3 Bb7 5.Nc3, uses a3 to rule out ...Bb4 and then aims for e4. Black usually answers with ...d5, and the engine line goes 6.cxd5 Nxd5 7.Nxd5 Qxd5.
The Spassky System, 4.e3, is the quiet choice. White plays Bd3 and O-O without a fight for e4, and the engine rates the position as equal.
Typical plans for White
In the fianchetto lines White plays Bg2, O-O and Nc3, then Qc2 or Rc1 to support e4. The g2 bishop takes away the power of the b7 bishop, so Black often gets a solid but slightly passive game. A later d5 push can gain space and cut the b7 bishop off.
In the 4.a3 and 4.Nc3 lines White plays for e4 directly. The idea is simple: once the e4 pawn is supported by the c3 knight and the queen, Black's whole setup loses its point.
- Challenge a knight on e4 with Bd3 or Nd2 at once.
- Keep the c4 pawn protected; in the fianchetto lines ...Ba6 often targets it.
- Use b3 and Bb2 in the quiet lines to complete development calmly.
Typical plans for Black
Black's first task is to control e4. Play ...Bb7, castle and be ready with ...Ne4 or ...d5 when White prepares e4. In the 4.Nc3 lines the pin ...Bb4 adds pressure on e4 and ...f5 can back up a knight on that square.
The second task is to free the position. The pawn break ...c5 attacks d4, and ...d5 fixes the center so the b7 bishop cannot be shut out by d5. With the center settled, Black's pieces fit well: rooks on c8 and d8, the queen on e7 or c7.
- Trade dark-squared bishops with ...Bb4+ if White gives the chance.
- Do not allow d5 with a cramp in the center unless you can hit back with ...e6 exchanges.
Mistakes club players make
- Letting White play e4 for free. If White gets c4, d4 and e4 with pieces behind them, Black's b7 bishop bites on granite. Fight for e4 early.
- Pushing e4 too soon as White. An unsupported e4 pawn drops to ...Nxe4 or ...Bxe4.
- Forgetting ...Ba6. In the fianchetto lines this move hits c4; White should have b3, Qc2 or Nbd2 ready.
- Leaving the knight on e4 without support. Black should back it up with ...f5 or ...d5, or it can be traded off at the wrong moment.
- Playing ...c5 before castling. Opening the center with the king in the middle invites trouble on the e-file.
Who should play it
The Queen's Indian suits Black players who like a sound, flexible setup and do not mind a long maneuvering game. It is a natural partner for the Nimzo-Indian when White avoids Nc3 with 3.Nf3. The theory is moderate, and the ideas repeat: control e4, free the game with ...c5 or ...d5.
For White, the 4.g3 fianchetto is a calm path with a small lasting edge. Players who want more tension can try 4.a3 or 4.Nc3 and fight for e4 directly.
What the engine plays from here
Stockfish 17.1 at depth 20 rates the position +0.35: a slight edge for White. Its three top choices for White:
- +0.35 4.g3 Bb4+ 5.Bd2 Bxd2+ 6.Qxd2 Bb7
- +0.16 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5
- +0.10 4.Nc3 Bb4 5.Qc2 Bb7 6.e3 Ne4
Pawns, from White's side.
How it scores on lichess
2,822 rated lichess games reached this position; White scored 52.4%.
Light: White wins. Grey: draws. Dark: Black wins. About the sample.
Variations of the Queen's Indian Defense
- Kasparov Variation4.Nc3 · 649 games
- Fianchetto Variation4.g3 · 457 games
- Kasparov-Petrosian Variation4.a3 · 334 games
- Spassky System4.e3 · 228 games
- Miles Variation4.Bf4 · rare
- Kasparov-Petrosian Variation, Romanishin Attack4.a3 · rare
- Monticelli Trap4.g3 · rare
- Spassky System34.e3 · rare
- Pillsbury Attack4.Nc3 · rare
How to play against it
As White, the 4.g3 fianchetto is the solid way to meet it: you oppose the b7 bishop, castle quickly and keep a small edge with little risk. If you prefer a central fight, 4.a3 stops ...Bb4 and prepares Nc3 and e4. Do not rush e4 before your pieces support it; a loose e4 pawn is exactly what the b7 bishop wants to hit.
Questions
What are the moves of the Queen's Indian Defense?
The Queen's Indian Defense starts 1.d4 Nf6 2.c4 e6 3.Nf3 b6. Its ECO code is E12.
Is the Queen's Indian Defense good for Black?
Stockfish 17.1 rates the position +0.35 at depth 20, which is a slight edge for White. In 2,822 lichess games from our sample, White scored 52.4%. A good fit for patient Black players who like solid structures and slow maneuvering more than early tactics.
What is the main idea of the Queen's Indian Defense?
Black fianchettoes the queen's bishop on b7 to control e4 and the long diagonal, keeping the center flexible. White tries to gain space with e4 or neutralize the bishop with a g3 fianchetto of its own.
What should White play next?
The engine's first choice is g3, with a3 and Nc3 close behind. 4.g3 prepares Bg2, which meets the b7 bishop head on and takes the sting out of Black's pressure on e4.
Updated October 2026. Sources and method.