Queen's Gambit Declined: Semi-Tarrasch Defense (7. exd4 Bd6)
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Bd6
The Queen's Gambit Declined: Semi-Tarrasch Defense is a chess opening classified as ECO D40, reached after 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Bd6. It is a line of the Queen's Gambit Declined. White is to move.
This exact move order didn't appear in our sample of 12.6 million Lichess games: it's a rare line.
Engine evaluation: +0.53 (Stockfish, depth 29; best line 8. c5 Bc7 9. Bd3 O-O 10. Bg5 e5)
- ECO
- D40
- Moves
- 14 plies
- FEN
r1bqk2r/pp3ppp/2nbpn2/3p4/2PP4/P1N2N2/1P3PPP/R1BQKB1R w KQkq - 1 8- PGN
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Bd6
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Comes from
Queen's Gambit Declined: Normal Defense 1. d4 d5 2. c4 e6 3. Nc3 Nf6
More Queen's Gambit Declined lines (all)
- 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
- Queen's Gambit Declined: Baltic Defense, Queen Attack D06
- Queen's Gambit Declined: Baltic Defense, Queen Attack Deferred D06
- Queen's Gambit Declined: Marshall Defense D06
- Queen's Gambit Declined: Marshall Defense, Tan Gambit D06
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.