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- 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, B99 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 - Sicilian Defense: Najdorf Variation, Main Line, B99g - 10.Bd3 h6 11.Qh3 - Najdorf, Main Line (1975), SÉRIE B 1.e4 2....
EU Team Ch Plovdiv 1983 – Round 5 – Timman, Jan H – 1-0 – Portisch, Lajos – G17
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- 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, B92 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 - Sicilian Defense: Najdorf Variation, Opocensky Variation, B92k - 6…e5 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 - Najdorf (1953), SÉRIE B 1.e4 2....
EU Team Ch Plovdiv 1983 – Round 6 – Dam Mortensen, Erling – 1/2-1/2 – Ljubojevic, Ljubomir – G20
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- E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E81 - 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O - King's Indian Defense: Sämisch Variation, Normal Defense, E81f - 6.Bg5 Nc6 - Saemisch (1966), SÉRIE E
EU Team Ch Plovdiv 1983 – Round 6 – Polugaevsky, Lev – 1/2-1/2 – Nunn, John D M – G19
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- A60-A79 1. d4 Nf6 2. c4 c6 3. d5 e6 Modern Benoni Defense, A77 - 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 - Benoni Defense: Classical Variation, Czerniak Defense, Tal Line, A77j - 10…Nbd7 11.a4 Ne5 12.Ra3 - Classical, Main Line (1975), SÉRIE A
EU Team Ch Plovdiv 1983 – Round 6 – Portisch, Lajos – 1-0 – Lobron, Eric – G18
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- E12 - 1.d4 Nf6 2.c4 e6 3.Nf3 b6 - Queen's Indian Defense, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E12s - 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.e3 - Kasparov-Petrosian Variation, Petrosian Attack (1946), SÉRIE E
EU Team Ch Plovdiv 1983 – Round 7 – Polugaevsky, Lev – 1/2-1/2 – Portisch, Lajos – G23
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