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- 6...a6 7.Qd2 (not 7...Nf6), B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B48 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 - Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack, B48 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Qatar Masters Open 2015 – Round 4.27 – Tabatabaei Bafghi, Mohammad – 0-1 – Vitiugov, Nikita – G145

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- (not 7.d3), 6.O-O d6, A10-A39 English Opening, A37 - 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 - English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation, A37 - 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5 - English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3, SÉRIE A
Qatar Masters Open 2015 – Round 4.28 – Ma, Zhonghan – 0-1 – Moiseenko, Alexander – G146

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- 6.Ne5 Nbd7 — Main Line, 7.Nxc4 Qc7 8.g3 e5 9.dxe5 Nxe5 10.Bf4 Nfd7 11.Bg2 f6 — Main Line, D10-D19 1. d4 d5 2. c4 c6 Queen's Gambit Slav defence, D17 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 - Slav Defense: Czech Variation, SÉRIE D
Qatar Masters Open 2015 – Round 4.3 – So, Wesley – 1-0 – Akopian, Vladimir – G148

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- 4...Ba6 5.b3 Bb7, 6.Bg2 Bb4+ 7.Bd2 a5 8.O-O O-O, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E15 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 - Queen's Indian Defense: Fianchetto Variation, SÉRIE E
Qatar Masters Open 2015 – Round 4.4 – Dubov, Daniil – 1/2-1/2 – Mamedyarov, Shakhriyar – G151

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- 6.Nbd2 O-O — Capablanca, 7.O-O d5, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E16 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ - Queen's Indian Defense: Capablanca Variation, SÉRIE E
Qatar Masters Open 2015 – Round 4.6 – Ni, Hua – 1/2-1/2 – Sjugirov, Sanan – G155

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- 5.Bf4 O-O, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D37 - 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Bf4 Nf6 5. e3 O-O 6. Nf3 Nbd7 - Queen's Gambit Declined: Harrwitz Attack, D37 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 - Queen's Gambit Declined: Three Knights Variation, D37 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 - Queen's Gambit Declined: Barmen Variation, SÉRIE D
Qatar Masters Open 2015 – Round 4.7 – Swiercz, Dariusz – 1/2-1/2 – Howell, David W L – G156

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