D37Black10 book lines continue
Harrwitz Attack, Main Line
Queen's Gambit Declined1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5
Also known as QGD: Classical, 5...O-O 6.e3 c5 7.dxc5 Bxc5, Queen's Gambit Declined, Harrwitz Attack.