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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 a6 6. Be2 e6 - Sicilian Defense: Scheveningen Variation, Classical Variation, B84 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nbd7 - Sicilian Defense: Najdorf Variation, Scheveningen Variation, B84 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 14 – Unzicker, Wolfgang – 1/2-1/2 – Portisch, Lajos – G22

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- 5...f6 6.d4 exd4 — Exchange, 7.Nxd4 Ne7, C60-C69 1. e4 e5 2. Nf3 Nc6 3. Bb5 Ruy Lopez (Spanish opening), C69 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O - Ruy Lopez: Exchange Variation, Normal Variation, SÉRIE C
Siegen olm 1970 – Round 15 – Fischer, Raphael – 1-0 – Unzicker, Wolfgang – G24

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- 5...f6 6.d4 Bg4 — Exchange, 7.c3 Bd6, C60-C69 1. e4 e5 2. Nf3 Nc6 3. Bb5 Ruy Lopez (Spanish opening), C69 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O - Ruy Lopez: Exchange Variation, Normal Variation, SÉRIE C
Siegen olm 1970 – Round 16 – Hort, Vlastimil – 1/2-1/2 – Portisch, Lajos – G27

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- 7...cxd4 8.exd4 Be7 — Main Line, 9.O-O O-O 10.Re1 — Main Line, D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D42 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 - Queen's Gambit Declined: Semi-Tarrasch Defense, Main Line, SÉRIE D
Siegen olm 1970 – Round 17 – Popov, Luben – 1-0 – Podzielny, Karl-Heinz – G29

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- 6...Nf6 7.Nc3 O-O, 8.Be2 d6 9.O-O Nxd4, 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 Defense: Accelerated Dragon, Maróczy Bind, B38 - 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 18 – Larsen, Benjamin Holsko – 1/2-1/2 – Browne, Walter S – G32

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- 10.Be3, 9.O-O O-O, 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 - Tarrasch Defense: Rubinstein System, D33 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 cxd4 8. Nxd4 Bc5 - Tarrasch Defense: Dubov Tarrasch, SÉRIE D
Siegen olm 1970 – Round 18 – Spassky, Boris V. – 1-0 – Yanofsky, Daniel Abraham – G31

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