Chess opening
Queen's Gambit Declined: Orthodox Defense, Main LineD63
The Queen's Gambit Declined: Orthodox Defense, Main Line is a chess opening classified under ECO code D63. It is reached after the moves:
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1
Play it vs Stockfish Open in analysis board
Comes from
Main continuations
- Queen's Gambit Declined: Orthodox Defense, Henneberger Variation (D63)
- Queen's Gambit Declined: Orthodox Defense, Main Line (D63)
Related lines in the Queen's Gambit Declined
- Queen's Gambit Declined: Baltic Defense, Pseudo-Slav (D02)
- Queen's Gambit Declined: Austrian Attack, Salvio Countergambit (D06)
- Queen's Gambit Declined: Austrian Defense (D06)
- Queen's Gambit Declined: Austrian Defense, Gusev Countergambit (D06)
- Queen's Gambit Declined: Austrian Defense, Haberditz Variation (D06)
- Queen's Gambit Declined: Baltic Defense (D06)
- Queen's Gambit Declined: Baltic Defense, Argentinian Gambit (D06)
- Queen's Gambit Declined: Baltic Defense, Pseudo-Chigorin (D06)
Train this opening
LibreChess runs Stockfish in your browser — play the Queen's Gambit Declined against the engine at any strength, get hints, and review your game move by move afterwards. Free, no account needed. You can also add this line to your repertoire and drill it with spaced repetition.