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- B20-B99 1. e4 c5 - Sicilian Defense, B60-B69 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Sicilian, Richter-Rauzer, B62 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 - Sicilian Defense: Richter-Rauzer Variation, B62i - 8.Bxc6 - Richter-Rauzer, Margate (1963), SÉRIE B 1.e4 2....
Biel Interzonal 1993 – Round 12 – Yudasin, Leonid – 1-0 – Shirov, Alexei – G273
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- C70-C79 Ruy Lopez1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 ....., C75 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 - Morphy Defense, Modern Steinitz Defense (1923), C75c - 6.O-O - Spanish: Modern Steinitz (1900), SÉRIE C
Biel Interzonal 1993 – Round 13 – Adams, Michael – 1/2-1/2 – Yudasin, Leonid – G294
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- B20-B99 1. e4 c5 - Sicilian Defense, B30 - 1.e4 c5 2.Nf3 Nc6 - Sicilian Defense: Old Sicilian, B30-B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B30p - 4.Nc3 - Rossolimo (1903), SÉRIE B 1.e4 2....
Biel Interzonal 1993 – Round 13 – Arencibia Rodriguez, Walter – 1/2-1/2 – Illescas Cordoba, Miguel – G287
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