Mate in 20

Do you think anyone will be interested in 20 moves of engine analysis in a completely won position? It's really game over after the first move.

Well obviously one did, so yes

I looked at the solution but I didn't solve it which should be the intention. It is (probably) correct but neither "interesting" nor "aesthetically pleasing". Had you used human ingeniosity, you would have changed it into a checkmate in 4 moves by adjusting the position of the black queen:

1.Be4 is impossible to find! Great puzzle!

Referring to post #1

I understand that it could be modified, but this is an actual game from my chess club. Although black resigned before the sequence. It's not something I composed with an engine to look "interesting" , all credits goes to the  players 

I thought it would be something like that. In my view, the purpose of a puzzle (and it is a puzzle forum) is to be "interesting" and its relationship to a game is incidental.

So we can agree to disagree on that. Happens a lot to me lately

I'll just leave this here.

Tablebase mate in 549

Nice. I'd at least need 550 moves in this position.