ECO E11 · Bogo-Indian Defense

Bogo-Indian Defense: Grünfeld Variation

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2

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

4… b6+0.29

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

Analyze this position

In the Bogo-Indian Defense: Grünfeld Variation (E11), reached after 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2, Stockfish 18 recommends 4… b6 for Black. The position is roughly equal (+0.29).

Top engine moves

  1. +0.294… b6 5. a3 Bxd2+ 6. Nxd2 Bb7 7. e3 d6 8. b4 a5 9. Bb2
  2. +0.404… a5 5. Qc2 d5 6. a3 Be7 7. e4 c5 8. cxd5 exd5 9. dxc5
  3. +0.434… c5 5. a3 Bxd2+ 6. Bxd2 d6 7. dxc5 dxc5 8. Bc3 O-O 9. Qc2

Frequently asked questions

What is the best move in the Bogo-Indian Defense: Grünfeld Variation?
After 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2, Stockfish 18 at depth 18 recommends 4… b6 for Black, continuing 5. a3 Bxd2+ 6. Nxd2 Bb7 7. e3 d6 8. b4 a5 9. Bb2. The position is roughly equal (+0.29). The next best moves are 4… a5 (+0.40) and 4… c5 (+0.43).
Is the Bogo-Indian Defense: Grünfeld Variation a good opening?
Stockfish rates the position at +0.29: 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 Bogo-Indian Defense: Grünfeld Variation?
E11. 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+).