Mate in 3 · No. 103 · Harder

Queen, rook, bishop and knight

White to play and mate in three.

Position

White
king on h3, queen on a3, rook on d2, bishop on d7, knight on c3, pawns on a4, d3, f3, g2 and h4
Black
king on d4, bishop on a1, pawns on c5, e3, f6 and g7