(The following chess game is presented in "algebraic notation." Here's an explanation of how to follow the moves.)
1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5?!
This is called the Wilkes-Barre Variation, named for a city near my hometown of Havertown PA. It may be unsound, but has definite shock value. One point is that after the tempting 5. Nxf7, Black gets an attack with 5. ... Bxf2+, 6. Kxf2 Nxe4+ and 7. ... Qh4.
5. Bxf7+ Ke7 6. Bd5 Qe8
At this point, my friend and fellow player Michael walked by and did a double-take. He thought I had mixed up my King with my Queen!
7. Nc3 d6 8. Nb5 Rf8 9. Nxc7 Qg6 10. d3? Bxf2+!
White can't take the Bishop, because of 11. Kxf2 Nxd5+ and 12. ... Nxc7.
11. Kf1 Bg4 12. Qd2 Be3!
Again, the Bishop is poison: 13. Qxe3 Nxd5+.
13. Qe1 Nxe4+ 14. Nf3 Rxf3+! 15. gxf3 Bh3+ 16. Ke2 Nd4+ 17. Kxe3 ...
Or 17. Kd1 Nf2+
17. ... Qg5+ 18. Kxe4 Bf5# mate