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- 6.bxc3 (not 6...Qa5, 6...Qc7, 6...Ne7, 7.Qg4, 7.h4), C00-C19 1. e4 e6 French defence, C18 - 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 - French Defense: Winawer Variation, Advance Variation, SÉRIE C
XX Ciudad de Leon 2007 – Round 1.1 – Anand, Viswanathan – 1-0 – Ponomariov, Ruslan – G2

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- 6.Be3 c5, 7.Nge2 Nc6 8.d5, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E81 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O - King's Indian Defense: Sämisch Variation, Normal Defense, SÉRIE E
XX Ciudad de Leon 2007 – Round 1.2 – Kasimdzhanov, Rustam – 0-1 – Topalov, Veselin – G3

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- (not 10.Nxe5), 9.exd5 Nxd5 — Main Line, C80-C89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 & C84-C89 C84 5. O-O Be7 Ruy Lopez, closed defence, C89 - 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 d5 - Ruy Lopez: Marshall Attack, SÉRIE C
XX Ciudad de Leon 2007 – Round 1.2 – Ponomariov, Ruslan – 0-1 – Anand, Viswanathan – G4

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- 6.bxc3 (not 6...Qa5, 6...Qc7, 6...Ne7, 7.Qg4, 7.h4), C00-C19 1. e4 e6 French defence, C18 - 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 - French Defense: Winawer Variation, Advance Variation, SÉRIE C
XX Ciudad de Leon 2007 – Round 1.3 – Anand, Viswanathan – 1/2-1/2 – Ponomariov, Ruslan – G5

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- 7...Na6 8.Be3 Ng4 — Main Line, 9.Bg5 Qe8 10.dxe5 dxe5 11.h3 h6 — Main Line, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E94 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O - King's Indian Defense: Orthodox Variation, SÉRIE E
XX Ciudad de Leon 2007 – Round 1.4 – Kasimdzhanov, Rustam – 1/2-1/2 – Topalov, Veselin – G8

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- 6.O-O O-O — Main Line, 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bd2, E01-E09 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Catalan, closed, E05 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, SÉRIE E
XX Ciudad de Leon 2007 – Round 1.4 – Ponomariov, Ruslan – 1/2-1/2 – Anand, Viswanathan – G7

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- 9.h3 (not 9...a5, 9...Be6, 9...Nd7, 9...Bb7, 10.d4), 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, C92 - 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 - Ruy Lopez: Closed, SÉRIE C
XX Ciudad de Leon 2007 – Round 2.1 – Topalov, Veselin – 1/2-1/2 – Anand, Viswanathan – G9

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- B20 - B99 - 1. e4 c5 - Sicilian Defense, B90 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 - Sicilian Defense: Najdorf Variation, B90 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 - Sicilian Defense: Najdorf Variation, English Attack, B90 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, SÉRIE B 1.e4 2....
XX Ciudad de Leon 2007 – Round 2.2 – Anand, Viswanathan – 1-0 – Topalov, Veselin – G10

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- 7...O-O 8.h3 Bb7 9.d3 d6, C80-C89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 & C84-C89 C84 5. O-O Be7 Ruy Lopez, closed defence, C88 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 - Ruy Lopez: Closed, SÉRIE C
XX Ciudad de Leon 2007 – Round 2.3 – Topalov, Veselin – 1/2-1/2 – Anand, Viswanathan – G11

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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, B84 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 - Sicilian Defense: Scheveningen Variation, Classical Variation, B84 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nbd7 - Sicilian Defense: Najdorf Variation, Scheveningen Variation, B84 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
XX Ciudad de Leon 2007 – Round 2.4 – Anand, Viswanathan – 1-0 – Topalov, Veselin – G12

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