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- C40-C49 1. e4 e5 2. Nf3 King's knight opening, C42 - 1.e4 e5 2.Nf3 Nf6 - Russian Game (Petroff Defence) [+0.41], C42r - 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6 - Russian Game: Classical Marshall [+0.34], SÉRIE C
8. Sinquefield Cup 2021 – Round 1.5 – Swiercz, Dariusz – 0-1 – Dominguez Perez, Leinier – G5
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- B20-B99 1. e4 c5 - Sicilian Defense, B30-B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B38 - 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 - Sicilian [+0.53], B38m - 6…Nf6 7.Nc3 O-O 8.Be2 d6 9.f3 - Maroczy Bind [+0.49], SÉRIE B 1.e4 2....
8. Sinquefield Cup 2021 – Round 2.2 – Shankland, Sam – 1/2-1/2 – Xiong, Jeffery – G7
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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
8. Sinquefield Cup 2021 – Round 3.2 – Mamedyarov, Shakhriyar – 1-0 – Rapport, Richard – G12
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