abcdefgh87654321
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O a6 5.Bxc6 bxc6 6.Nc3 d5 7.Re1 Bb4 8.d3 O-O 9.d4 dxe4 10.Rxe4 c5 11.Bg5 Qe8 12.Bxf6 gxf6 13.dxe5 Bf5 14.Re3 Rd8 15.Qe2 Rd7 16.exf6 Qd8 17.Ne5 Rd6 18.Ng4 Bxg4 19.Qxg4+ Kh8 20.Qg7#