Mate in 3 · No. 380 · Harder

Queen, rook and knight

White to play and mate in three.

Position

White
king on g6, queen on g4, rook on f7, knight on c7, pawns on b2, b3, c4, f4 and h3
Black
king on a7, rooks on c3 and d1, bishop on h8, pawns on a4 and a6