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- B20 - B99 - 1. e4 c5 - Sicilian Defense, B80 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B80a - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 - Sicilian Defense: Scheveningen Variation, SÉRIE B 1.e4 2....
Interpolis 1980 – Round 1 – Spassky, Boris V. – 1-0 – Andersson, Ulf 1949 – G22

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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E54 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 - Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation, SÉRIE E
Interpolis 1980 – Round 1 – Spassky, Boris Vasily – 1/2-1/2 – Hort, Vlastimil – G8

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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
Interpolis 1980 – Round 1 – Spassky, Boris Vasily – 1/2-1/2 – Sosonko, Gennadi – G7

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- 6...e5 7.Nb3 Be7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B92a - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 - Sicilian Defense: Najdorf Variation, Opocensky Variation, B92j - 8...O-O - 6.Be2 e5 7.Nb3 Be7 8.O-O O-O, SÉRIE B 1.e4 2....
Interpolis 1980 – Round 1 – Tal, Mikhail – 1/2-1/2 – Huebner, Robert – G24

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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, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O - Sicilian Defense: Scheveningen Variation, Classical Main Line, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Interpolis 1980 – Round 1 – Tal, Mikhail – 1/2-1/2 – Ribli, Zoltan – G23

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- A10-A39 English Opening, A26 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 - English Opening: King's English Variation, Closed System, Full Symmetry, A26 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4.... - English Opening, A26 - English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3 h6, SÉRIE A
Interpolis 1980 – Round 1 – Tal, Mikhail – 1/2-1/2 – Sosonko, Gennadi – G3

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- 6.Bd2 Bxd2+ — Capablanca, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E16a - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ - Queen's Indian Defense: Capablanca Variation, E16r - 7.Qxd2 O-O 8.Nc3, SÉRIE E
Interpolis 1980 – Round 1 – Timman, Jan H – 1-0 – Huebner, Robert – G12

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