ECO D30 · Queen's Gambit Declined

Queen's Gambit Declined: Semmering Variation

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. Bd3 c5

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

7. O-O+0.37

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Queen's Gambit Declined: Semmering Variation (D30), reached after 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. Bd3 c5, Stockfish 18 recommends 7. O-O for White. White is slightly better (+0.37).

Top engine moves

  1. +0.377. O-O Be7 8. cxd5 exd5 9. b3 O-O 10. Bb2 cxd4 11. Nxd4 Nc5
  2. +0.297. cxd5 exd5 8. b3 Bd6 9. O-O O-O 10. Bb2 b6 11. Re1 Bb7
  3. +0.247. a4 b6 8. O-O Bb7 9. a5 dxc4 10. Bxc4 a6 11. axb6 Nxb6

Frequently asked questions

What is the best move in the Queen's Gambit Declined: Semmering Variation?
After 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. Bd3 c5, Stockfish 18 at depth 18 recommends 7. O-O for White, continuing Be7 8. cxd5 exd5 9. b3 O-O 10. Bb2 cxd4 11. Nxd4 Nc5. White is slightly better (+0.37). The next best moves are 7. cxd5 (+0.29) and 7. a4 (+0.24).
Is the Queen's Gambit Declined: Semmering Variation a good opening?
Stockfish rates the position at +0.37: white is slightly better. 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 Gambit Declined: Semmering Variation?
D30. 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+).