Mate in 3 · No. 402 · Harder

Rook and two bishops

White to play and mate in three.

Position

White
king on a7, rook on c8, bishops on a2 and c7, pawns on c3, e4, g3 and h3
Black
king on f6, rook on h6, pawns on d6, g5, g6 and g7