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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, E05 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, E05 - 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2, SÉRIE E
Moscow FIDE Grand Prix 2019 – Round 3.2 – Grischuk, Alexander – 1-0 – Nakamura, Hikaru – G37

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- 7.Qb3 Qb6, D70-D79 1. d4 Nf6 2. c4 g6 3. f3 d5 Neo-Gruenfeld defence, D78 - 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5 - Neo-Grünfeld Defense: Classical Variation, Original Defense, SÉRIE D
Moscow FIDE Grand Prix 2019 – Round 3.5 – Wojtaszek, Radoslaw – 1/2-1/2 – Nepomniachtchi, Ian – G41

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- 7...c5 8.Be2 O-O — Exchange, 9.O-O Nc6, D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D85 - 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 - Grünfeld Defense: Exchange Variation, Modern Exchange Variation, D85 - 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5- Grünfeld Defense, SÉRIE D
Moscow FIDE Grand Prix 2019 – Round 4.1 – Grischuk, Alexander – 1/2-1/2 – Nepomniachtchi, Ian – G43

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- 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, C67 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 - Ruy Lopez: Berlin Defense, Rio Gambit Accepted, SÉRIE C
Moscow FIDE Grand Prix 2019 – Round 4.2 – Nepomniachtchi, Ian – 1/2-1/2 – Grischuk, Alexander – G44

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- 3...Nf6 4.g3, C40-C49 King's knight opening, C44 - 1. e4 e5 2. Nf3 Nc6 - King's Knight Opening: Normal Variation, C44 - 1. e4 e5 2. Nf3 Nc6 3. g3 - King's Knight Opening: Konstantinopolsky, SÉRIE C
Moscow FIDE Grand Prix 2019 – Round 4.3 – Grischuk, Alexander – 1/2-1/2 – Nepomniachtchi, Ian – G45

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- 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, C54 - 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 - Italian Game: Classical Variation, Giuoco Pianissimo, SÉRIE C
Moscow FIDE Grand Prix 2019 – Round 4.4 – Nepomniachtchi, Ian – 1-0 – Grischuk, Alexander – G46

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