Sicilian Defense: Open, Classical, Boleslavsky Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nf3 h6 8.O-O Be7 9.Re1 O-O 10.h3 Be6 11.Bf1 Nb8 12.a4