Mate in 3 · No. 30 · Harder

Two rooks and bishop

White to play and mate in three.

Position

White: king on h2, rooks on c1 and c7, bishop on g7, pawns on e3, f2, g4 and h5
Black: king on d6, rooks on a8 and d3, bishop on b3, pawns on a4, e4 and e6