Mate in 1 · No. 2 · Predicted ~700

Rook and bishop

White to play and mate in one.

Position

White
king on b1, rook on d1, bishop on h4, pawns on b4, c2, d4 and h3
Black
king on h8, rook on a4, bishop on g8, pawns on a5, a6, f6 and h7