D64White2 book lines continue
Orthodox Defense, Rubinstein Attack
Queen's Gambit Declined1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. a3 a6 9. Qc2
Also known as Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack, 8. a3 a6 9. Qc2, Queen's Gambit Declined, Orthodox Defense, QGD: Orthodox defence, Rubinstein attack, Gruenfeld variation.