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- 6.e4 c5 — Ragozin, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D39a - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 - Queen's Gambit Declined: Ragozin Defense, Vienna Variation, D39g - 7.e5 cxd4 8.Qa4+ Nc6 9.O-O-O, SÉRIE D
Interpolis 1987 – Round 1 – Nikolic, Predrag – 1/2-1/2 – Ljubojevic, Ljubomir – G15

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- 4.exd5 Qxd5 — Main Line, C00-C19 1. e4 e6 French defence, C07a - 1. e4 e6 2. d4 d5 3. Nd2 c5 - French Defense: Tarrasch Variation, Open System, C07t - 5.Ngf3 cxd4 6.Bc4 Qd6 7.O-O Nf6 8.Nb3 Nc6 9.Nbxd4 Nxd4 10.Nxd4 a6 11.Re1 — Main Line, SÉRIE C
Interpolis 1987 – Round 1 – Sokolov, Albert – 1/2-1/2 – Huebner, Robert – G23

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- 4.exd5 Qxd5 — Main Line, C00-C19 1. e4 e6 French defence, C07a - 1. e4 e6 2. d4 d5 3. Nd2 c5 - French Defense: Tarrasch Variation, Open System, C07q - 5...cxd4 6.Bc4 Qd6 7.O-O Nf6 8.Nb3 Nc6 9.Nbxd4 Nxd4 10.Nxd4 (not 10...a6), SÉRIE C
Interpolis 1987 – Round 1 – Sokolov, Andrei – 1/2-1/2 – Andersson, Ulf 1949 – G25

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- 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, C92a - 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, C92e - 9...Nd7 (not 10.d4), SÉRIE C
Interpolis 1987 – Round 1 – Sokolov, Andrei – 1/2-1/2 – Nikolic, Predrag – G21

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- 6.d4 b5, 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, C80a - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 - Ruy Lopez: Open, C80o - 9.Be3 - Main Line, SÉRIE C
Interpolis 1987 – Round 1 – Timman, Jan H – 1-0 – Jussupow, Artur – G20

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- 5.Bxc4 c5, D20-D29 1. d4 d5 2. c4 dxc4 Queen's gambit accepted, D26a - 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 - Queen's Gambit Accepted: Normal Variation, Traditional System, D26m - 6.Qe2 a6 7.dxc5 Bxc5 8.O-O (not 8...Nc6, 8...b5), SÉRIE D
Interpolis 1987 – Round 1 – Timman, Jan H – 1/2-1/2 – Huebner, Robert – G5

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