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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, B94 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 - Sicilian Defense: Najdorf Variation, B94d - 7.* - Najdorf, SÉRIE B 1.e4 2....
Qatar Masters Open 2015 – Round 4.17 – Zhang, Zhong – 1/2-1/2 – Ponomariov, Ruslan – G134
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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, B90e - 6.h3 - Najdorf Variation, Adams Attack (1948), SÉRIE B 1.e4 2....
Qatar Masters Open 2015 – Round 4.18 – Hou, Yifan(HLJ) – 1-0 – Esen Baatarsukh – G135
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- 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, E16g - 7.O-O O-O - Capablanca, Yates (1927), SÉRIE E
Qatar Masters Open 2015 – Round 4.19 – Fedoseev, Vladimir – 1-0 – Xu, Jun(SD) – G136
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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 Defense: Najdorf Variation, Opocensky Variation, B92f - 8.* - Najdorf, SÉRIE B 1.e4 2....
Qatar Masters Open 2015 – Round 4.2 – Duda, Jacob – 0-1 – Carlsen, Magnus – G137
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- 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, C95 - 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 9.h3 Nb8 10.d4 - Spanish, C95f - 11…* - Closed, Breyer, SÉRIE C
Qatar Masters Open 2015 – Round 4.20 – Bok, Benjamin – 0-1 – Bologan, Victor – G138
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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D95 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 - Grünfeld Defense: Three Knights Variation, Vienna Variation, D95g - 7.* - Botvinnik Variation, SÉRIE D
Qatar Masters Open 2015 – Round 4.22 – Yuffa, Daniil – 1/2-1/2 – Vidit, Santosh Gujrathi – G140
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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D58 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 - QGD, D58m - 11.O-O - Tartakower (1972), SÉRIE D
Qatar Masters Open 2015 – Round 4.23 – Nguyen, Ngoc Truong Son – 1/2-1/2 – Gagare, Shardul – G141
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- E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E62 - 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 - King's Indian Defense: Fianchetto Variation, Delayed Fianchetto, E62f - 8.* - Fianchetto Variation, Larsen Defense, SÉRIE E
Qatar Masters Open 2015 – Round 4.25 – Sasikiran, Krishnan – 1/2-1/2 – Wang, Yiye – G143
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- C70-C79 Ruy Lopez1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 ....., C72 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O - Morphy Defense, Modern Steinitz Defense (1961), C72e - 6.d4 - Spanish: Modern Steinitz (1905), SÉRIE C
Qatar Masters Open 2015 – Round 4.26 – Wei, Yi – 0-1 – Vignesh N R – G144
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