https://www.chess.com/forum/view/more-puzzles/hardest-mate-in-1-can-you-find-it?page=1
THATS NOT MATE
I know, but I’m just pointing out that you can take the bishop.
You can also go make yourself a ham sandwich. But that isnt mate in one either.
Ive seen this poition before, Qa3 is clearly mate but nt obvious to find
https://www.chess.com/forum/view/more-puzzles/hardest-mate-in-1-can-you-find-it?page=1