Mate in 3 · No. 331 · Harder

Queen, bishop and two knights

White to play and mate in three.

Position

White
king on c4, queen on h1, bishop on h5, knights on d5 and f6, pawns on b3, c2, d3, e4 and h4
Black
king on g3, rook on b6, pawns on d6, f5 and h6