Sicilian Defense: Open, Classical, Richter-Rauzer Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.Nb3 Qb6 10.f3 a6 11.h4