Mate in 3 · No. 286 · Harder

Queen, two rooks and knight

White to play and mate in three.

Position

White
king on e7, queen on f3, rooks on e1 and g8, knight on h4, pawns on a4, c2 and g3
Black
king on c7, bishop on a6, pawns on b7, d7 and f6