1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 e6 6.O-O Be7 7.c4 Nb6 8.Nc3 O-O 9.Be3 d5 10.c5 Bxf3 11.gxf3 Nc8 12.f4 Nc6 13.f5 exf5