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- 6.O-O O-O — Main Line, 7.Qc2 a6 8.a4 Bd7 (not 9.Qxc4), E01-E09 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Catalan, closed, E05 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, SÉRIE E
It 1980 – Round 1 – Sosonko, Gennadi – 1/2-1/2 – Karpov, Anatoly – G1

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- B20 - B99 - 1. e4 c5 - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B81 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, B81a - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 - Sicilian Defense: Scheveningen Variation, Keres Attack, B81o - 6...h6 7.g5, SÉRIE B 1.e4 2....
It 1980 – Round 11 – Timman, Jan H – 1/2-1/2 – Spassky, Boris V. – G6

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- 4...d5 5.Nxe5 Nd7 — Main Line, A00a - Start position, C43a - 1. e4 e5 2. Nf3 Nf6 3. d4 - Petrov's Defense: Modern Attack, C43f - 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 - Petrov's Defense: Modern Attack, C43g - 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 - Petrov's Defense: Modern Attack, Center Variation, C43p - 6.Qe2, SÉRIE C
It 1980 – Round 3 – Karpov, Anatoly – 0-1 – Larsen, Bent – 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. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 - Nimzo-Indian Defense: Normal Variation, Bernstein Defense, SÉRIE E
It 1980 – Round 8 – Spassky, Boris V. – 1/2-1/2 – Sosonko, Gennadi – G5

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