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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, B83 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 - Sicilian Defense: Scheveningen Variation, Classical Variation, B83 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Johannesburg 1981 – Round 2 – Nunn, John D M – 1/2-1/2 – Andersson, Ulf 1949 – G9

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- 10.Nxd4 Re8, 8...c6 9.Bf1 exd4, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E95 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1 - King's Indian Defense: Orthodox Variation, SÉRIE E
Johannesburg 1981 – Round 3 – Andersson, Ulf 1949 – 1-0 – Nunn, John D M – G18

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- 6...h6 7.h3 Nc6 8.Bg2, 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. Nxd4 Nf6 5. Nc3 d6 6. g4 - Sicilian Defense: Scheveningen Variation, Keres Attack, B81 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Johannesburg 1981 – Round 3 – Huebner, Robert – 1/2-1/2 – Andersson, Ulf 1949 – G14

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- 7...cxd4 8.exd4 Be7 — Main Line, 9.O-O O-O 10.Re1 Bf6 11.Be4 Nce7 — Main Line, D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D42 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 - Queen's Gambit Declined: Semi-Tarrasch Defense, Main Line, SÉRIE D
Johannesburg 1981 – Round 3 – Nunn, John D M – 1/2-1/2 – Huebner, Robert – G15

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- 8.h3 Rb8, 9.e4, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E63 - 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 - King's Indian Defense: Fianchetto Variation, Panno Variation, SÉRIE E
Johannesburg 1981 – Round 4 – Huebner, Robert – 1-0 – Nunn, John D M – G20

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- 13...Nc6 14.Nb3 a5, 15.Be3 a4 16.Nbd2 Bd7, C90-C99 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 Ruy Lopez, closed, C99 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 - Ruy Lopez: Closed, Chigorin Defense, Panov System, SÉRIE C
Johannesburg 1981 – Round 4 – Huebner, Robert – 1/2-1/2 – Korchnoi, Viktor – G22

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- A10-A39 English Opening, A19 - 1. c4 e6 2. Nc3 Nf6 3. e4 c5 - English Opening: Mikenas-Carls, Sicilian, A19 - 1. c4 e6 2. Nc3 Nf6 3. e4 c5 4. e5 Ng8 - English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit, SÉRIE A
Johannesburg 1981 – Round 4 – Korchnoi, Viktor – 1/2-1/2 – Andersson, Ulf 1949 – G19

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