Mate in 3 · No. 297 · ~1800 · Check

Queen, rook, bishop and knight

White to play and mate in three.

Position

White
king on d6, queen on g8, rook on h7, bishop on h3, knight on g1, pawns on a3, b4, c3, d4 and f2
Black
king on e4, rooks on g3 and g5, bishops on f6 and g2, knight on h2, pawns on c4, c6, d3, e3, f3, f5, f7 and h4