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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E57 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 dxc4 9.Bxc4 cxd4 - Nimzo-Indian [+0.60], E57i - 10.exd4 Be7 11.Re1 a6 - Main Line [+0.55], SÉRIE E
Manila Interzonal 1990 – Round 4 – Gulko, Boris – 1-0 – El Taher, Fouad – G74
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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E38 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 - Nimzo-Indian [+0.37], E38l - 5.dxc5 Na6 6.a3 Bxc3+ 7.Qxc3 Nxc5 8.b4 Nce4 9.Qd4 d5 10.c5 - Classical Na6: [+0.62], SÉRIE E
Manila Interzonal 1990 – Round 4 – Ivanchuk, Vasyl – 1-0 – De Firmian, Nick – G63
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- B20-B99 1. e4 c5 - Sicilian Defense, B70 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 - Sicilian [+0.50], B70-B79 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 Sicilian, dragon variation, B70i - 6.Be2 Nc6 [+0.29], SÉRIE B 1.e4 2....
Manila Interzonal 1990 – Round 4 – Ljubojevic, Ljubomir – 1/2-1/2 – Korchnoi, Viktor – G67
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