If you find mate in 1, you’re a genius 🧠

or Qb3#

I am now going to edit this comment 5 months later to say that  THE QUEEN IS

5 more months later I edit again

The queen is pinned but can still move along the g8 to b3 diagonal, due to moving to those squares not allowing the black bishop to check

Rxg8+ can be blocked by the black queen, so can Bh2+ and Qxg8+

The only other way to check without the black queen blocking is Qb3#. The black bishop cannot capture the queen because it's being pinned by the rook.

If the black bishop captures it, the rook will take the black king BEFORE the white king is captured, because the winner is whoever checkmates or captures the opponent's king FIRST

White text version