1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.Bc4 (There is no need for this retreat. 5.O-O is better) 5...Nf6 6.e5 d5 7.Bb3 Bg4 (Dubious, but it works here. Better is 7...Ne4 ) 8.f3 Ne4 9.O-O d3
White to move.
10.fxg4 loses to 10...Bc5+ 11.Kh1 Ng3+ 12.hxg3 Qg5 13.Rf5 h5! and mates.