Mate in 3 · No. 283 · Harder

Queen, rook and knight

White to play and mate in three.

Position

White
king on f2, queen on d7, rook on b1, knight on c2, pawns on b4, d4, e3, g3 and h4
Black
king on b8, queen on h5, knight on g1, pawns on a5 and e6