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- A10-A39 English Opening, A30 - 1.c4 c5 - English, A30y - 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4 Qc7 - Symmetrical Hedgehog Flexible Formation, SÉRIE A
Milaan 1975 – Round 10 – Petrosian, Tigran V – 1/2-1/2 – Andersson, Ulf 1949 – G35
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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, B38x - 6…Nf6 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2 Nxd4 11.Bxd4 Bc6 12.f3 - Maroczy Bind, SÉRIE B 1.e4 2....
Milaan 1975 – Round 11 – Karpov, Anatoly – 1/2-1/2 – Mariotti, Sergio – G37
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