Mate in 3 · No. 452 · Harder

Queen, rook and knight

White to play and mate in three.

Position

White
king on h8, queen on b3, rook on f6, knight on h3, pawns on a4, d2 and e2
Black
king on e5, queen on c7, bishop on f3, knight on f2, pawns on c5, e4, g4 and h4