Really nice problem.
similar to king's gambit opening
There is a "smothered" mate as well, but it takes two moves more:
1.Qh6+ Ke8 2.Ng7+ Kf8 3.Ne6+ Kf7 4.Qg7+ Ke8 5.Qf8+ Rxf8(or Nxf8) 6.Ng7#
I like it better.
nice and easy
Prativa_pralh: If 3. Qf8+ Kxf8...not checkmate...
didn't see the third move at first
THat pesky knight. Nice
this option can be defeated at 2. ...d5