D39Black16 book lines continue
Ragozin Defense, Vienna Variation
Queen's Gambit Declined1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4
Also known as QGD: Ragozin, Vienna Variation, Queen's Gambit Declined, Ragozin Defense, Vienna Variation, QGD; D39.