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- 4...Ba6 5.b3 Bb4+ — Main Line, 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 9.Ne5 Nfd7 — Main Line, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E15 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 - Queen's Indian Defense: Fianchetto Variation, SÉRIE E
World Cup 1991 – Round 13 – Nikolic, Predrag – 1/2-1/2 – Khalifman, Alexander – G96

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- 7...cxd4 8.Nxd4 Nxd4 — Main Line, 9.Qxd4 d6 10.Qd3 Bf5 — Main Line, A10-A39 English Opening, A39 - 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 - English Opening: Symmetrical Variation, Mecking Variation, SÉRIE A
World Cup 1991 – Round 14 – Ivanchuk, Vasyl – 1-0 – Andersson, Ulf 1949 – G105

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- 7...c5 8.Qd2 O-O — Exchange, 9.Rc1, 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
World Cup 1991 – Round 14 – Karpov, Aleksandr – 1-0 – Ehlvest, Jaan – G100

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- 7...Nc6 8.dxc5 dxc5 — Exchange, 9.Bf4, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E65 - 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c5 7. Nc3 - King's Indian Defense: Fianchetto Variation, Yugoslav Variation, SÉRIE E
World Cup 1991 – Round 14 – Salov, Valery – 1/2-1/2 – Speelman, Jon S – G99

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