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- C70-C79 Ruy Lopez1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 ....., C78 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O - Morphy Defense, C78e - 5…b5 - Spanish, C78e - 5…b5 6.Bb3 - Spanish (1925), C78h - 5…b5 6.Bb3 Bc5 - Spanish (1996), C78j - 5…b5 6.Bb3 Bc5 7.c3 - Spanish (1920), C78j - 5…b5 6.Bb3 Bc5 7.c3 d6 - Spanish (1996), C78j - 8.* (1996), SÉRIE C
82. Tata Steel GpA 2020 – Round 11.4 – Kovalev, Vladislav – 0-1 – Caruana, Fabiano – G67
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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-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B90g - 6…* (1968), SÉRIE B 1.e4 2....
82. Tata Steel GpA 2020 – Round 11.6 – So, Wesley – 1/2-1/2 – Xiong, Jeffery – G69
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- C80 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 - Ruy Lopez: Open, 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, C80h - 6.d4 Be7 - Spanish: Open (1905), SÉRIE C
82. Tata Steel GpA 2020 – Round 11.7 – Vitiugov, Nikita – 1/2-1/2 – Dubov, Daniil – G70
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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D85 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 - Gruenfeld, D85x - 4…Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Be3 O-O 9.Rc1 Qa5 10.Qd2 - Modern Exchange (1990), SÉRIE D
82. Tata Steel GpA 2020 – Round 12.1 – Carlsen, Magnus – 1/2-1/2 – Artemiev, Vladislav – G71
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- C40-C49 1. e4 e5 2. Nf3 King's knight opening, C47 - 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 - Four Knights Game, C47u - 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5 8.exd5 cxd5 9.O-O O-O - Scotch, Main Line (1913), SÉRIE C
82. Tata Steel GpA 2020 – Round 12.4 – Van Foreest, Jorden – 1/2-1/2 – So, Wesley – G74
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