Mate in 3 · No. 507 · Harder

Rook, bishop and knight

White to play and mate in three.

Position

White
king on a1, rook on b1, bishop on f5, knight on d8, pawns on a2, a4, d3, e2 and h4
Black
king on h6, knight on h1, pawns on e4, e7, f6 and h5