Mate in 3 · No. 515 · Harder

Queen, two rooks and bishop

White to play and mate in three.

Position

White
king on b1, queen on c4, rooks on e6 and g7, bishop on h5, pawns on e3, f3, g2 and h4
Black
king on c8, queen on a4, rook on c5, bishop on d2, pawns on b6, d5 and e5