ECO A47 · Marienbad System

Marienbad System: Berg Variation

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c4 cxd4 6. Qxd4

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

6… Nc6+0.13

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

Analyze this position

In the Marienbad System: Berg Variation (A47), reached after 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c4 cxd4 6. Qxd4, Stockfish 18 recommends 6… Nc6 for Black. The position is roughly equal (+0.13).

Top engine moves

  1. +0.136… Nc6 7. Qd1 Ne5 8. Nbd2 Rc8 9. b3 e6 10. O-O Qc7 11. Bb2
  2. +0.226… e6 7. O-O Nc6 8. Qf4 Ne7 9. b3 Ng6 10. Qd2 Rc8 11. Bb2
  3. +0.316… g6 7. Nc3 Bg7 8. O-O O-O 9. Qh4 d6 10. Bh6 Nbd7 11. b3

Frequently asked questions

What is the best move in the Marienbad System: Berg Variation?
After 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c4 cxd4 6. Qxd4, Stockfish 18 at depth 18 recommends 6… Nc6 for Black, continuing 7. Qd1 Ne5 8. Nbd2 Rc8 9. b3 e6 10. O-O Qc7 11. Bb2. The position is roughly equal (+0.13). The next best moves are 6… e6 (+0.22) and 6… g6 (+0.31).
Is the Marienbad System: Berg 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 Marienbad System: Berg Variation?
A47. ECO codes classify chess openings from A00 to E99; A is the volume for flank openings.

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