What should white play here?

Pretty amazing isnt it? 

That had no hope written all over it.

Why not sacrifice the queen and trap checkmate with the knight?

because the king can just take the knight

Well, I made a few "practice" moves until one with the queen finally worked, and then I just followed up with the next check, and then it made sense.

It does look pretty hopeless at first though !

Nice, I got it, but after a lot of wrong tries.

Wouldnt you just love to win a game like that??

That would make my month.

That was amazing...