Bd6+
Hardest Mate in 1

Bruh it's clearly d8Q how is this a debate? Qa3 can be blocked by Qc5
There's a c8 bishop and there's a h3 king ._.
Bruh it's clearly d8Q how is this a debate? Qa3 can be blocked by Qc5
The pawn's pinned and Qc5 is illegal because the queen is pinned to the rook. The answer is Qa3#.

This the hardest mate in 1 I can find. There is only one mate in 1 and it is White to Move. This is incredibly hard!