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- 6.O-O O-O — Main Line, 7.Qc2, 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 1.4 – Harikrishna, Pentala – 1/2-1/2 – So, Wesley – G25

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- 6.O-O O-O — Main Line, 7.Ne5, 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 1.6 – Yu, Yangyi – 1/2-1/2 – Aronian, Levon – G32

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- 6...dxc4 7.Na3 (not 7...Na6, 7...Nc6, 7...c3), D70-D79 1. d4 Nf6 2. c4 g6 3. f3 d5 Neo-Gruenfeld defence, D77 - 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 - Neo-Grünfeld Defense: Classical Variation, SÉRIE D
Riga FIDE Grand Prix 2019 – Round 1.8 – Aadvika Giri – 1/2-1/2 – Karjakin, Sergey – G36

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