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- 5.e3 O-O, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D37a - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 - Queen's Gambit Declined: Three Knights Variation, D37b - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 - Queen's Gambit Declined: Barmen Variation, D37f - 6.b3, SÉRIE D
World Blitz 2009 – Round 33 – Karpov, Anatoly – 0-1 – Gelfand, Boris – G338

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- 6.O-O O-O — Main Line, E01-E09 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Catalan, closed, E05a - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, E05l - 7.Qc2 a6 8.a4 Bd7 (not 9.Qxc4), SÉRIE E
World Blitz 2009 – Round 33 – Tkachiev, Vladislav – 1/2-1/2 – Anand, Viswanathan – G341

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- 5.a4 e6, D10-D19 1. d4 d5 2. c4 c6 Queen's Gambit Slav defence, D15a - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 - Slav Defense: Three Knights Variation, D15d - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 - Slav Defense: Chebanenko Variation, D15n - 6.Bg5, SÉRIE D
World Blitz 2009 – Round 34 – Carlsen, Magnus – 1-0 – Karjakin, Sergey – G348

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