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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, B83 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be2 Nf6 - Sicilian Defense: Scheveningen Variation, Modern Variation [+0.47], B83l - 6…Nc6 7.O-O Be7 8.Be3 O-O 9.f4 Bd7 10.Qe1 - Scheveningen Modern [+0.26], SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 1 – Browne, Walter Shawn – 1/2-1/2 – Spassky, Boris V. – G2
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- 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, C95 - 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 9.h3 Nb8 10.d4 - Spanish [+0.44], C95l - 10…Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.Nf1 Bf8 14.Ng3 g6 - Closed Breyer Main Line [+0.52], SÉRIE C
Siegen olm 1970 – Round 10 – Spaete, Erwin – 1/2-1/2 – Ungnad, Rainer – G14
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- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B42 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 - Sicilian [+0.48], B42j - 5…Nf6 6.O-O d6 7.c4 - Kan [+0.48], SÉRIE B 1.e4 2....
Siegen olm 1970 – Round 11 – Fischer, Raphael – 1-0 – Najdorf, Miguel – G17
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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D58 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 - QGD [+0.13], D58p - 8.Rc1 Bb7 - Tartakower [+0.00], SÉRIE D
Siegen olm 1970 – Round 13 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G20
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