Mate in 3 · No. 9 · Harder

Two rooks, bishop and knight

White to play and mate in three.

Position

White
king on g1, rooks on b7 and f7, bishop on e6, knight on b3, pawns on d2, d4, g4, h2 and h4
Black
king on c8, rook on c2, pawns on b5, d7, e5 and f5