Mate in 3 · No. 433 · Harder

Queen, rook and two bishops

White to play and mate in three.

Position

White
king on d8, queen on h3, rook on b3, bishops on e4 and e7, pawns on c3, d2, d4, g3 and h4
Black
king on h6, knight on c1, pawns on e6, g4 and g6