D51White1 book lines continue
Modern Variation, Knight Defense
Queen's Gambit Declined1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. cxd5
Also known as QGD: 4.Bg5 Nbd7 5.e3 c6, Queen's Gambit Declined: Modern, Knight Defense, 4. Bg5 Nbd7 5. e3 c6.