English Opening: Symmetrical, Fianchetto, Rubinstein Variation

1.c4 c5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nc7 6.Nf3 Nc6 7.O-O e5 8.d3 Be7 9.Nd2 Bd7 10.Nc4 f6 11.f4 b5 12.Ne3 exf4 13.gxf4