Mate in 3 · No. 136 · ~1700 · Sacrifice

Queen, rook and two knights

White to play and mate in three.

Position

White
king on a5, queen on c3, rook on f6, knights on c6 and g8, pawns on a3, b3 and c4
Black
king on h5, rooks on e2 and g3, bishops on f7 and h4, knights on e8 and g2, pawns on e6, e7, f4, f5, g4 and g6