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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], C42m - 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 - Russian Game: Nimzowitsch Attack [+0.12], SÉRIE C
83. Tata Steel Masters 2021 – Round 3.4 – Caruana, Fabiano – 1/2-1/2 – Duda, Jacob – G21
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- B20-B99 1. e4 c5 - Sicilian Defense, B50-B59 Sicilian 1. e4 c5 2. Nf3 d6, B53 - 1.e4 c5 2.Nf3 d6 3.d4 - Sicilian [+0.25], B53l - 3…cxd4 4.Qxd4 Nc6 - Chekhover [+0.10], SÉRIE B 1.e4 2....
83. Tata Steel Masters 2021 – Round 3.6 – Esipenko, Andrey – 1/2-1/2 – Vachier-Lagrave, Maxime – G23
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- 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 - Spanish [+0.28], C89j - 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d3 Bd6 13.Re1 Qh4 - Marshall [+0.33], SÉRIE C
83. Tata Steel Masters 2021 – Round 4.2 – Vachier-Lagrave, Maxime – 1/2-1/2 – Anton Guijarro, David – G26
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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D87 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 - Gruenfeld [+0.33], D87g - 9.O-O Nc6 10.Be3 - Classical Exchange [+0.39], SÉRIE D
83. Tata Steel Masters 2021 – Round 4.3 – Duda, Jacob – 1/2-1/2 – Giri, Anish – G27
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- B20-B99 1. e4 c5 - Sicilian Defense, B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B92 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 - Sicilian [+0.24], B92i - 6…e5 7.Nb3 Be7 8.O-O Be6 9.f4 - Najdorf [+0.39], SÉRIE B 1.e4 2....
83. Tata Steel Masters 2021 – Round 4.4 – Esipenko, Andrey – 1/2-1/2 – Grandelius, Nils – G28
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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 [+0.29], B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B90e - 6.h3 - Najdorf Adams Attack [+0.17], SÉRIE B 1.e4 2....
83. Tata Steel Masters 2021 – Round 4.6 – Donchenko, Alexander – 1/2-1/2 – Wojtaszek, Radoslaw – G30
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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 [+0.29], B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B90l - 6.Be3 e5 7.Nb3 - Najdorf [+0.30], SÉRIE B 1.e4 2....
83. Tata Steel Masters 2021 – Round 5.1 – Carlsen, Magnus – 1/2-1/2 – Donchenko, Alexander – G32
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