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- 7.Bg5 a6, 8.Na3 b5 9.Nd5 Be7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B30 - B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 - Sicilian Defense: Open, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bc5 - Sicilian Defense: Four Knights Variation, Cobra Variation, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
63. ch-USA 2019 – Round 1.1 – Sevian, Samuel – 1/2-1/2 – Caruana, Fabiano – G1

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- 6.Nxc6 (not 6...bxc6), B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 - Sicilian Defense: Taimanov Variation, B45 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 - Sicilian Defense: Four Knights Variation, B45 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
63. ch-USA 2019 – Round 1.6 – Liang, Awonder – 1/2-1/2 – Lenderman, Aleksandr – G6

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- 6.e4 Nxc3 — Main Line, 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 O-O 11.Bb5, D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D41 - 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d5 5. d4 e6 - Queen's Gambit Declined: Semi-Tarrasch Defense, SÉRIE D
63. ch-USA 2019 – Round 10.1 – Nakamura, Hikaru – 1/2-1/2 – Dominguez Perez, Leinier – G55

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- 8...a6 (not 9.a4, 9.O-O, 9.e4), 9.a4, D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D48 - 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 - Semi-Slav Defense: Meran Variation, SÉRIE D
63. ch-USA 2019 – Round 10.5 – Akobian, Varuzhan – 1/2-1/2 – Shankland, Sam – G59

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