D42White24 book lines continue
Semi-Tarrasch Defense, Main Line
Queen's Gambit Declined1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3
Also known as QGD: Semi-Tarrasch, 6.e3 Nc6 7.Bd3, Queen's Gambit Declined, Semi-Tarrasch Defense, D42.