Mate in 3 · No. 232 · Harder

Two rooks and knight

White to play and mate in three.

Position

White
king on a4, rooks on b3 and g6, knight on c6, pawns on c2, c4, f2, g3 and h4
Black
king on c8, rooks on b5 and d7, pawns on c5, c7, e7 and f7