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- B20-B99 1. e4 c5 - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B84 - 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 - Sicilian, B84w - 7.O-O Qc7 8.Be3 Nc6 - Scheveningen Classical [+0.36], SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 14 – Unzicker, Wolfgang – 1/2-1/2 – Portisch, Lajos – G22
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- D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D42 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 - QGD [+0.22], D42j - 7…cxd4 8.exd4 Be7 9.O-O O-O 10.Re1 - Semi-Tarrasch Main Line [+0.40], SÉRIE D
Siegen olm 1970 – Round 17 – Popov, Luben – 1-0 – Podzielny, Karl-Heinz – G29
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- B20-B99 1. e4 c5 - Sicilian Defense, B30-B39 1.e4 c5 2. Nf3 Nc6 Sicilian defence, B38 - 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 - Sicilian [+0.53], B38q - 6…Nf6 7.Nc3 O-O 8.Be2 d6 9.O-O Nxd4 - Maroczy Bind [+0.60], SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 18 – Larsen, Bent – 1/2-1/2 – Browne, Walter Shawn – G32
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- D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D33 - 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 - QGD Tarrasch [+0.30], D33q - 6…Nf6 7.Bg2 cxd4 8.Nxd4 Be7 9.O-O O-O 10.Be3 [+0.58], SÉRIE D
Siegen olm 1970 – Round 18 – Spassky, Boris V. – 1-0 – Yanofsky, Daniel Abraham – G31
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