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- 6.a3 Bxc5, 7.Nf3 Nc6, E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E39 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O - Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation, SÉRIE E
Amsterdam 1981 – Round ? – Karpov, Anatoly – 1/2-1/2 – Portisch, Lajos – G29

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- 8.Rc1 Bb7 — Tartakower, 9.cxd5 exd5, D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D58 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 - Queen's Gambit Declined: Tartakower Defense, SÉRIE D
Amsterdam 1981 – Round 1 – Hort, Vlastimil – 1-0 – Karpov, Aleksandr – G13

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- 11...Bxd5 (not 12.Bd3, 12.Qa4), D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D59 - 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6 - Queen's Gambit Declined: Tartakower Defense, SÉRIE D
Amsterdam 1981 – Round 1 – Hort, Vlastimil – 1/2-1/2 – Kavalek, Lubomir – G12

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- (not 9.d5), 7...Ne4 8.Bd2 f5, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E18 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 - Queen's Indian Defense: Classical Variation, Traditional Variation, SÉRIE E
Amsterdam 1981 – Round 1 – Karpov, Aleksandr – 1/2-1/2 – Polugaevsky, Lev – G7

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