ECO E12 · Queen's Indian Defense

Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2

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Black to move. The arrow shows Stockfish’s best move.
Best move

7… Nxc3+0.13

The position is roughly equal. Stockfish 18, depth 18.

Analyze this position

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack (E12), reached after 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2, Stockfish 18 recommends 7… Nxc3 for Black. The position is roughly equal (+0.13).

Top engine moves

  1. +0.137… Nxc3 8. bxc3 c5 9. e4 Nd7 10. Bd3 Qc7 11. Qa2 Nf6 12. Bb5+
  2. +0.167… c5 8. e4 Nxc3 9. bxc3 Nd7 10. Bd3 Qc7 11. Qa2 Be7 12. O-O
  3. +0.247… Be7 8. Bd2 O-O 9. e4 Nxc3 10. Bxc3 c5 11. dxc5 bxc5 12. Bc4

Frequently asked questions

What is the best move in the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack?
After 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2, Stockfish 18 at depth 18 recommends 7… Nxc3 for Black, continuing 8. bxc3 c5 9. e4 Nd7 10. Bd3 Qc7 11. Qa2 Nf6 12. Bb5+. The position is roughly equal (+0.13). The next best moves are 7… c5 (+0.16) and 7… Be7 (+0.24).
Is the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack a good opening?
Stockfish rates the position at +0.13: the position is roughly equal. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack?
E12. ECO codes classify chess openings from A00 to E99; E is the volume for indian defenses.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).