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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E52 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 - Nimzo-Indian Defense: Normal Variation, Schlechter Defense, SÉRIE E
Manila Interzonal 1990 – Round 2 – De La Torre Rodriguez, Elizabeth – 0-1 – Kortchnoi, V. – G31

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- 8.O-O O-O — Main Line, 9.dxc5 Bxc5 10.Bg5 d4 11.Bxf6 Qxf6 12.Nd5 Qd8 13.Nd2 Re8 — Main Line, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D34 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 - Tarrasch Defense: Prague Variation, Main Line, SÉRIE D
Manila Interzonal 1990 – Round 2 – Dreev, Aleksey – 1/2-1/2 – Ivanovic, Bozidar – G29

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- 7...Ne4 8.Bd2 Bf6, 9.Rc1, 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
Manila Interzonal 1990 – Round 2 – Dzindzichashvili, Roman – 1/2-1/2 – Seirawan, Yasser – G33

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- 5.a3 (not 5...e6, 5...d6, 5...e5, 5...Nf6, 5...Be7, 6.Nge2), A10-A39 English Opening, A36 - 1. c4 c5 2. e4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 - English Opening: Symmetrical Variation, Botvinnik System, A36 - 1. c4 c5 2. Nc3 Nc6 3. g3 - English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation, SÉRIE A
Manila Interzonal 1990 – Round 2 – Georgiev, Kaloyan – 1/2-1/2 – Ehlvest, Jaan – G22

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- 8.O-O O-O — Main Line, 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D34 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 - Tarrasch Defense: Prague Variation, Main Line, SÉRIE D
Manila Interzonal 1990 – Round 2 – Gurevich, Mikhail – 1-0 – Tal, Mikhail – G24

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- 8.d5 Ne7, 9.Nd2 a5 10.a3 Nd7 11.Rb1 f5 12.b4, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E97 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 - King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense, SÉRIE E
Manila Interzonal 1990 – Round 2 – Illescas Cordoba, Miguel – 0-1 – Khalifman, Alexander – G25

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