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- 8...c6 9.Bf1 (not 9...Re8, 9...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
Petropolis Interzonal 1973 – Round 12 – Hort, Vlastimil – 1-0 – Reshevsky, Samuel – G46

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- 5.Nb5 d6, 6.c4 Nf6 7.N5c3, B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B44 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 - Sicilian Defense: Taimanov Variation, SÉRIE B 1.e4 2....
Petropolis Interzonal 1973 – Round 12 – Ljubojevic, Ljubomir – 1/2-1/2 – Polugaevsky, Lev – G50

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- 5.Nb5 d6, 6.c4 Nf6 7.N1c3 a6 8.Na3 Be7 9.Be2 O-O 10.O-O b6 11.Be3 Bb7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B44 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 - Sicilian Defense: Taimanov Variation, SÉRIE B 1.e4 2....
Petropolis Interzonal 1973 – Round 12 – Mecking, Henrique – 1/2-1/2 – Geller, Efim P – G49

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- 5...Qd7 - Zaitsev Variation, B20 - B99 - 1. e4 c5 - Sicilian Defense, B50-B59 Sicilian 1. e4 c5 2. Nf3 d6, B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 - Sicilian Defense: Chekhover Variation, B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Petropolis Interzonal 1973 – Round 12 – Tan, Lian Ann – 0-1 – Portisch, Lajos – G48

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- 3...Nd7 4.d4 Nf6, 5.Nc3, B20 - B99 - 1. e4 c5 - Sicilian Defense, B50-B59 Sicilian 1. e4 c5 2. Nf3 d6, B51 - 1. e4 c5 2. Nf3 d6 3. Bb5+ - Sicilian Defense: Moscow Variation, SÉRIE B 1.e4 2....
Petropolis Interzonal 1973 – Round 13 – Keres, Paul Petrovich – 1/2-1/2 – Ljubojevic, Ljubomir – G56

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- 7.O-O Qa5, 8.h3, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E62 - 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 - King's Indian Defense: Fianchetto Variation, Carlsbad Variation, SÉRIE E
Petropolis Interzonal 1973 – Round 13 – Smyslov, Vladimir – 1-0 – Kagan, Shimon – G55

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