English Opening: Symmetrical Variation

1.c4 c5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O 6.d4 cxd4 7.Nxd4 d5 8.cxd5 Nxd5 9.Nb5 Be6 10.Nd4