1.e4 e6 2.d3 d5 3.Sf3 dxe4 4.Sg5? exd3 5.Lxd3 h6? (many other Black's moves probably winn) 6.Nxf7? Kxf7 7.Bg6+ Ke7! and Black is best.
Replying to Toldsted: It is really, REALLY rare for your opponent to find Ke7.
?
No. Your Knight is still at g8.