abcdefgh87654321
1.e4 c5 2.Nf3 Nc6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 e6 6.Be2 Bb4 7.O-O Nge7 8.Kh1 O-O 9.f4 b5 10.f5 exf5 11.exf5 f6 12.a4 bxa4 13.Bc4+ Kh8 14.Rf3 Ne5 15.Rh3 Nxc4 16.Qh5 h6 17.Bxh6 Qe8 18.Bxg7+ Kg8 19.Qh7+ Kf7 20.Bh8#