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- E12 - 1.d4 Nf6 2.c4 e6 3.Nf3 b6 - Queen's Indian Defense, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E12l - 4.a3 Bb7 5.Nc3 g6 - Kasparov-Petrosian Variation, Hedgehog Variation (1937), SÉRIE E
Candidats qf3 1980 – Round 13 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G13
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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D54 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1 - QGD, D54d - 6…h6 7.Bh4 b6 8.cxd5 Nxd5 9.Nxd5 exd5 10.Bxe7 Qxe7 - Anti-Neo-Orthodox, Main Line (1933), SÉRIE D
Candidats qf3 1980 – Round 2 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G2
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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E59 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 - Nimzo-Indian, E59i - 10.Bxc4 Qc7 11.Bb5 - Main Line (1954), SÉRIE E
Candidats qf3 1980 – Round 4 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G4
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