Mate in 1 · No. 258 · Predicted ~700

Queen and bishop

White to play and mate in one.

Position

White: king on e1, queen on b6, bishop on h4, pawns on c2, d2, e2, f2 and g3
Black: king on g8, queen on d8, bishop on d5, pawns on a7, c6, e7, f5, f7, g7 and h7