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- 6.e4 c5 — Ragozin, 7.Bxc4 cxd4 8.Nxd4 Bxc3+ 9.bxc3 Qa5 10.Bb5+, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D39 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 - Queen's Gambit Declined: Ragozin Defense, Vienna Variation, SÉRIE D
Interpolis 1989 – Round 6 – Kasparov, Garry – 1-0 – Hjartarson, Johann – G20

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- 7...Nc6 8.e5, 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, B96 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 - Sicilian Defense: Najdorf Variation, B96 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Interpolis 1989 – Round 6 – Ljubojevic, Ljubomir – 1-0 – Ivanchuk, Vasyl – G22

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- 7.e3 Bxc3+ — Main Line, 8.bxc3 e5 9.Bd3 — Main Line, E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E31 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 d6 - Nimzo-Indian Defense: Leningrad Variation, Benoni Defense, SÉRIE E
Interpolis 1989 – Round 7 – Hjartarson, Johann – 1/2-1/2 – Sax, Gyula – G25

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- 4...O-O 5.a3 Bxc3+, 6.Qxc3 b6 7.Bg5 Bb7 (not 8.e3, 8.f3), E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E32 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 - Nimzo-Indian Defense: Classical Variation, SÉRIE E
Interpolis 1989 – Round 7 – Korchnoi, Viktor – 1/2-1/2 – Ljubojevic, Ljubomir – G26

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- 8.h5 Bh7 — Main Line, B10 - B19 1. e4 c6 Caro-Kann defence, B19g - 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 - Caro-Kann Defense: Classical Variation, B19j - 9.Bd3 Bxd3 10.Qxd3 Ngf6, SÉRIE B 1.e4 2....
Interpolis 1989 – Round 8 – Hjartarson, Johann – 1/2-1/2 – Korchnoi, Viktor – G27

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- 9.a4 Bg4, C90 - 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 - Ruy Lopez: Closed, 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, SÉRIE C
Interpolis 1989 – Round 8 – Ljubojevic, Ljubomir – 1/2-1/2 – Agdestein, Simen – G28

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- 5...e6 6.O-O Be7 — Main Line, B05 - 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4.... - Alekhine Defense, B05a - 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 - Alekhine Defense: Modern Variation, Main Line, B05c - 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. c4 - Alekhine Defense: Modern Variation, Alekhine Variation, B05p - 7.c4 Nb6 8.h3 Bh5 9.Nc3 O-O 10.Be3 d5 — Main Line, SÉRIE B 1.e4 2....
Interpolis 1989 – Round 8 – Sax, Gyula – 1-0 – Ivanchuk, Vasyl – G29

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