abcdefgh87654321
1.e4 g6 2.d4 Bg7 3.h4 h5 4.Be3 c6 5.Nd2 d5 6.exd5 cxd5 7.Ngf3 Nc6 8.c3 Nh6 9.Bd3 Nf5 10.Bf4 Nd6 11.Qe2 Bf5 12.Bxf5 Nxf5 13.Ne5 Rc8 14.Ndf3 a6 15.Nxf7 Kxf7 16.Ng5+ Ke8 17.Qe6 Rf8 18.Qxg6+ Kd7 19.Ne6 Rf6 20.Nc5#