Home › Openings › Queen's Gambit Declined › Queen's Gambit Declined: Neo-Orthodox Variation Queen's Gambit Declined: Neo-Orthodox Variation, Main Line ECO D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Practice this opening · Play against the computer