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- 6.O-O O-O — Main Line, 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bd2 Be4, 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
FIDE Grand Prix 3 Pool A 2022 – Round 1.1 – Esipenko, Andrey – 1/2-1/2 – Oparin, Grigoriy – G1
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- 3...Bc5 4.O-O d6 5.c3 Nf6 6.d3 - 5.d3 d6 6.O-O, 5.d3 d6, C50-C59 1. e4 e5 2. Nf3 Nc6 3. Bc4 Italian Game, C54 - 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 - Italian Game: Classical Variation, Giuoco Pianissimo, SÉRIE C
FIDE Grand Prix 3 Pool A 2022 – Round 2.1 – Aronian, Levon – 1/2-1/2 – Oparin, Grigoriy – G3
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- E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E73 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 - King's Indian Defense: Normal Variation, Standard Development, E73f - King’s Indian: 5.Be2 O-O, SÉRIE E
FIDE Grand Prix 3 Pool A 2022 – Round 3.1 – Oparin, Grigoriy – 1/2-1/2 – Nakamura, Hikaru – G5
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