Mate in 3 · No. 423 · Harder

Queen, rook, bishop and knight

White to play and mate in three.

Position

White
king on a8, queen on g8, rook on c5, bishop on e6, knight on e5, pawns on e2, e3 and g3
Black
king on f6, queen on f4, rook on h2, bishop on c8, pawns on c3 and d5