Why not 3. Bh6?
There is a black pawn on Ng6, that would be an illegal move. ?
Alternative solution based on a different move by black - try it out!
Interesting try, but black has two choices on move three which avoid mate in four in your line: 3...h6 and 3...h5.
There's actually 2 other ways to mate in 4. You can check with the night at 3:Nx37+ The absolutely only way for black to get out of check is to take the night with the queen, and now the queen isn't protecting the black night so 4: qxn++Also, you can move the Bishop 3: Bh6. There's no way for black to prevent QF8++. I tried both of those, before I gave up and looked at the solution. What am I missing?
I always enjoy this section. Thanks in advance.
A difficult puzzle. Nice,
Kind of obvious