Mate in 3 · No. 269 · Harder

Two rooks, bishop and knight

White to play and mate in three.

Position

White
king on d2, rooks on d5 and h2, bishop on a5, knight on g6, pawns on b3, c3, d4, e4 and g4
Black
king on c8, bishop on c5, pawns on b5 and e5