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- 10.Nc3 Qb6, 9.Rd1 Nbd7, D20-D29 1. d4 d5 2. c4 dxc4 Queen's gambit accepted, D29 - 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 - Queen's Gambit Accepted: Classical Defense, Alekhine System, Main Line, SÉRIE D
Interpolis 1990 – Round 1 – Ivanchuk, Vasyl – 1-0 – Seirawan, Yasser – G1

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- (not 8.Bg2), 6...e5 7.Nde2 Be7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B91 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 - Sicilian Defense: Najdorf Variation, Zagreb Variation, B91 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Interpolis 1990 – Round 1 – Kamsky, Gata – 1-0 – Gelfand, Boris – G3

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- 5.Nb5 d6 — Main Line, 6.c4 Be7 7.Be2, B20 - B99 - 1. e4 c5 - Sicilian Defense, B30 - B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B32 - 1. e4 c5 2. Nf3 Nc6 3. d4 - Sicilian Defense: Open, B32 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 - Sicilian Defense: Accelerated Dragon, B32 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Interpolis 1990 – Round 11 – Ivanchuk, Vasyl – 1-0 – Short, Nigel D – G35

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- (not 7.Qd2, 7.h4), 5...O-O 6.Bg5 Na6, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E73 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 - King's Indian Defense: Normal Variation, Standard Development, SÉRIE E
Interpolis 1990 – Round 11 – Seirawan, Yasser – 0-1 – Gelfand, Boris – G34

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- 6...h6 7.Bh4 (not 7...b6), D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D54 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Rc1 - Queen's Gambit Declined: Neo-Orthodox Variation, SÉRIE D
Interpolis 1990 – Round 11 – Timman, Jan H – 1/2-1/2 – Andersson, Ulf 1949 – G33

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- 9...Bb7 (not 10.d4), C90-C99 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 Ruy Lopez, closed, C92 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 - Ruy Lopez: Closed, SÉRIE C
Interpolis 1990 – Round 12 – Kamsky, Gata – 0-1 – Timman, Jan H – G38

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