Sicilian Defense: Chekhover Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 a6 5.h3 Nc6 6.Qe3 g6 7.c4 Bg7 8.Nc3 Nf6 9.Be2 O-O 10.O-O