Mate in 3 · No. 384 · Harder

Queen, rook, bishop and knight

White to play and mate in three.

Position

White
king on g3, queen on d4, rook on b3, bishop on f6, knight on c1, pawns on b4, c4, d3, e3 and h3
Black
king on a8, queen on b1, pawns on a6, a7 and b6