ECO D81 · Grünfeld Defense

Grünfeld Defense: Russian Variation, Accelerated Variation

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3

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

4… dxc4+0.13

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

Analyze this position

In the Grünfeld Defense: Russian Variation, Accelerated Variation (D81), reached after 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3, Stockfish 18 recommends 4… dxc4 for Black. The position is roughly equal (+0.13).

Top engine moves

  1. +0.134… dxc4 5. Qxc4 Be6 6. Qb5+ Bd7 7. Qb3 c5 8. d5 b5 9. e4
  2. +0.334… c6 5. Nf3 Bg7 6. cxd5 cxd5 7. Bf4 Nc6 8. e3 Nh5 9. Qxd5
  3. +0.464… e6 5. Nf3 Bg7 6. Bg5 O-O 7. Rd1 c6 8. e3 Qa5 9. Bd3

Frequently asked questions

What is the best move in the Grünfeld Defense: Russian Variation, Accelerated Variation?
After 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3, Stockfish 18 at depth 18 recommends 4… dxc4 for Black, continuing 5. Qxc4 Be6 6. Qb5+ Bd7 7. Qb3 c5 8. d5 b5 9. e4. The position is roughly equal (+0.13). The next best moves are 4… c6 (+0.33) and 4… e6 (+0.46).
Is the Grünfeld Defense: Russian Variation, Accelerated Variation 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 Grünfeld Defense: Russian Variation, Accelerated Variation?
D81. ECO codes classify chess openings from A00 to E99; D is the volume for closed and semi-closed games.

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