Mate in 3 · No. 149 · Harder

Queen and knight

White to play and mate in three.

Position

White
king on d8, queen on e1, knight on c7, pawns on d4, f3, g2 and g4
Black
king on f6, queen on a4, rook on a1, knight on g8, pawns on c6, f5, g7 and h6