Mate in 3 · No. 273 · Harder

Two rooks, bishop and knight

White to play and mate in three.

Position

White
king on f5, rooks on c8 and e1, bishop on a8, knight on d1, pawns on c2, c3 and d4
Black
king on h6, rook on e2, pawns on f6, g3 and g4