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- 6.Qc2 Bd6, 7.Be2 O-O 8.O-O, D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D45 - 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 - Semi-Slav Defense: Main Line, D45 - 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6 - Semi-Slav Defense: Accelerated Meran Variation, SÉRIE D
Riga FIDE Grand Prix 2019 – Round 2.3 – Mamedyarov, Shakhriyar – 1/2-1/2 – Duda, Jacob – G47

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- 3...Bc5 4.d3 Nf6, C50 - 1. e4 e5 2. Nf3 Nc6 3. Bc4 - Italian Game, C50 - 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O - Italian Game: Giuoco Pianissimo, Normal, C50-C59 1. e4 e5 2. Nf3 Nc6 3. Bc4 Italian Game, SÉRIE C
Riga FIDE Grand Prix 2019 – Round 2.5 – Karjakin, Sergey – 1/2-1/2 – So, Wesley – G53

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- 6.O-O O-O — Main Line, 7.Ne5 Nc6 8.Nxc6, E01-E09 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Catalan, closed, E05 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, SÉRIE E
Riga FIDE Grand Prix 2019 – Round 3.1 – Mamedyarov, Shakhriyar – 1-0 – So, Wesley – G57

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- 5.d4 Nd6, 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+, C60-C69 1. e4 e5 2. Nf3 Nc6 3. Bb5 Ruy Lopez (Spanish opening), C67 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 - Ruy Lopez: Berlin Defense, Rio Gambit Accepted, SÉRIE C
Riga FIDE Grand Prix 2019 – Round 3.1 – Vachier-Lagrave, Maxime – 1/2-1/2 – Grischuk, Alexander – G58

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