English Opening: Symmetrical, Two Knights Variation

1.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3 Nf6 5.d4 cxd4 6.exd4 d5 7.cxd5 Nxd5 8.Qb3 Nxc3 9.Bc4 Nd5 10.Bxd5 e6 11.Bxc6+ bxc6 12.O-O Qd5