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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E59 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 - Nimzo-Indian Defense: Normal Variation, Bernstein Defense, SÉRIE E
Interpolis 1978 – Round 4 – Portisch, Lajos – 1-0 – Sosonko, Gennadi – G14

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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 1978 – Round 5 – Dzindzichashvili, Roman – 1/2-1/2 – Hort, Vlastimil – G19

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- 8.h5 Bh7 — Main Line, 9.Bd3 Bxd3 10.Qxd3 Qc7 11.Bd2 e6 12.O-O-O Ngf6 — Main Line, B10 - B19 1. e4 c6 Caro-Kann defence, B19 - 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, SÉRIE B 1.e4 2....
Interpolis 1978 – Round 5 – Spassky, Boris Vasily – 1/2-1/2 – Portisch, Lajos – G17

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- 6.g3 a6, 7.Bg2 Nf6 8.O-O Be7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B47 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 - Sicilian Defense: Taimanov Variation, Bastrikov Variation, SÉRIE B 1.e4 2....
Interpolis 1978 – Round 6 – Spassky, Boris Vasily – 1/2-1/2 – Ribli, Zoltan – G21

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- 7.Bd3, B20 - B99 - 1. e4 c5 - Sicilian Defense, B30 - B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 - Sicilian Defense: Open, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bc5 - Sicilian Defense: Four Knights Variation, Cobra Variation, B33 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Interpolis 1978 – Round 6 – Weiman Hort, Valentin – 1/2-1/2 – Hubner, R. – G22

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- 5.Bxc4 c5, D20-D29 1. d4 d5 2. c4 dxc4 Queen's gambit accepted, D26 - 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 - Queen's Gambit Accepted: Normal Variation, Traditional System, D26 - 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 - Queen's Gambit Accepted: Classical Defense, SÉRIE D
Interpolis 1978 – Round 7 – Ribli, Zoltan – 1/2-1/2 – Portisch, Lajos – G26

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- 5.e3 b5, 6.a4 b4 7.Nb1, D10-D19 1. d4 d5 2. c4 c6 Queen's Gambit Slav defence, D15 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 - Slav Defense: Three Knights Variation, D15 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 - Slav Defense: Chebanenko Variation, SÉRIE D
Interpolis 1978 – Round 7 – Sosonko, Gennadi – 1/2-1/2 – Hort, Vlastimil – G23

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