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- 6.g4 (not 6...e5, 6...a6, 6...h6, 6...Nc6, 7.Be3, 7.g5, 7.h4), B20 - B99 - 1. e4 c5 - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B81 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 - Sicilian Defense: Scheveningen Variation, Keres Attack, B81 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
? 1978 – Round 4 – Byrne, Robert E – 0-1 – Spassky, Boris V. – G2

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- 6.g3 Nc6 — Main Line, 7.Bg2 Be7 8.O-O O-O 9.Nxd5 exd5 10.dxc5 Bxc5 — Main Line, 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
? 1978 – Round 6 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G3

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