ECO D66 · Queen's Gambit Declined

Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. Nf3 Be7 6. e3 Nbd7 7. Rc1 O-O 8. Bd3 dxc4 9. Bxc4 b5

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

10. Bd3+0.31

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation (D66), reached after 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. Nf3 Be7 6. e3 Nbd7 7. Rc1 O-O 8. Bd3 dxc4 9. Bxc4 b5, Stockfish 18 recommends 10. Bd3 for White. White is slightly better (+0.31).

Top engine moves

  1. +0.3110. Bd3 Bb7 11. O-O Rc8 12. Qe2 a6 13. e4 c5 14. e5 cxd4
  2. +0.2610. Bxf6 Nxf6 11. Bd3 Bb7 12. O-O Rc8 13. Ne5 c5 14. Bxb5 Qb6
  3. +0.1210. Be2 Bb7 11. O-O a6 12. a3 h6 13. Bxf6 Nxf6 14. Ne5 Qb6

Frequently asked questions

What is the best move in the Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation?
After 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. Nf3 Be7 6. e3 Nbd7 7. Rc1 O-O 8. Bd3 dxc4 9. Bxc4 b5, Stockfish 18 at depth 18 recommends 10. Bd3 for White, continuing Bb7 11. O-O Rc8 12. Qe2 a6 13. e4 c5 14. e5 cxd4. White is slightly better (+0.31). The next best moves are 10. Bxf6 (+0.26) and 10. Be2 (+0.12).
Is the Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation a good opening?
Stockfish rates the position at +0.31: 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: Orthodox Defense, Fianchetto Variation?
D66. 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+).