Sicilian Defense: Kan, Knight Variation

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 Nf6 7.O-O Be7 8.f4 d6 9.a4 Nc6 10.Be3 O-O 11.Kh1 Bd7