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- D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D33 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 - Tarrasch Defense: Rubinstein System, D33 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 cxd4 8. Nxd4 Bc5 - Tarrasch Defense: Dubov Tarrasch, SÉRIE D
Riga FIDE Grand Prix 2019 – Round 1.1 – Mamedyarov, Shakhriyar – 1/2-1/2 – Dubov, Daniil – G2

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- 7...O-O 8.a4 Bb7, 9.d3 d6, C80-C89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 & C84-C89 C84 5. O-O Be7 Ruy Lopez, closed defence, C88 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 - Ruy Lopez: Closed, SÉRIE C
Riga FIDE Grand Prix 2019 – Round 1.1 – Nakamura, Hikaru – 1/2-1/2 – Topalov, Veselin – G5

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- 6.Nbd2 O-O — Capablanca, 7.O-O d5, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E16 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ - Queen's Indian Defense: Capablanca Variation, SÉRIE E
Riga FIDE Grand Prix 2019 – Round 1.2 – Aadvika Giri – 1/2-1/2 – Karjakin, Sergey – G9

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- 7...c5 8.Bb5+, 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
Riga FIDE Grand Prix 2019 – Round 1.2 – Dubov, Daniil – 0-1 – Mamedyarov, Shakhriyar – G15

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