Mate in 3 · No. 357 · Harder

Rook, bishop and two knights

White to play and mate in three.

Position

White
king on f7, rook on h7, bishop on c7, knights on b6 and d6, pawns on d3, f4, g4 and h3
Black
king on a6, rook on e5, pawns on a5, b3, c3 and c4