English Opening: Fianchetto, Ultra-Symmetrical Line

1.c4 c5 2.g3 Nc6 3.Bg2 g6 4.Nc3 Bg7 5.a3 d6 6.Rb1 a5 7.d3 e5 8.Nf3 Nge7 9.O-O O-O 10.Ne1 Be6 11.Nc2 d5 12.cxd5 Nxd5 13.Ne3 Nde7