Mate in 1 out of nowhere?

This thread is for games that would have continued if not for a particular move. I'm talking about moving into mate in 1 that wasn't forced.

Here's an example:
Game 1726459

one that i should have probably lost, i can say my dad wasn't very happyGame 760579

Here is one I had in an OTB game 🙂
my opponent played Qf2 while f5 would have been the best probably.