Queen's Gambit Declined: Harrwitz Attack (9… Qa5 10. O-O-O)
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O
The Queen's Gambit Declined: Harrwitz Attack is a chess opening classified as ECO D37, reached after 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O. It is a line of the Queen's Gambit Declined. Black 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: +0.11 (Stockfish, depth 38; best line 10… Be7 11. g4 dxc4 12. Bxc4 e5 13. g5)
- ECO
- D37
- Moves
- 19 plies
- FEN
r1b2rk1/pp3ppp/2n1pn2/q1bp4/2P2B2/P1N1PN2/1PQ2PPP/2KR1B1R b - - 2 10- PGN
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Master games
9 over-the-board games are classified under this line (White 33%, draw 23%, Black 44%). The strongest:
- GM Sergey Karjakin (2773) – GM Hikaru Nakamura (2777) 1/2-1/2 · Saint Louis Rapid 2018 · 2018-08-13
- GM Sergey Karjakin (2782) – GM Viswanathan Anand (2760) 0-1 · 6th Norway Chess 2018 · 2018-06-07
- GM Shakhriyar Mamedyarov (2764) – GM Hikaru Nakamura (2743) 1/2-1/2 · 7th Sinquefield Cup 2019 · 2019-08-18
- IM Alina Kashlinskaya (2494) – GM Andrey Esipenko (2682) 1-0 · Titled Tuesday 30th June · 2020-06-30
- GM Simon K Williams (2451) – GM Ngoc Truong Son Nguyen (2632) 0-1 · Titled Tue 29th Apr Early · 2025-04-29
Search all games of the Queen's Gambit Declined: Harrwitz Attack and its sub-variations
Comes from
Queen's Gambit Declined: Harrwitz Attack, Main Line 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5
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.