Voir : 12 24 Tous D30 Queen's Gambit Declined: Orthodox Defence (1) D31 QGD, 3.Nc3 (2) D35 QGD; Exchange Variation (3) D37 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 ... (2) D37 QGD; 4.Nf3 Be7 5.Bf4 (Harrwitz Attack) (2) D38 QGD; Ragozin Variation (1) D43 Semi-Slav Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 (2) D47 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 Wade variation (1) D50 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 6.cxd5 ... Semi-Pillsbury Tarrasch variation (1) D61 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Qc2 QGD: Orthodox defence, Rubinstein variation (2)