Mate in 2 · No. 855 · ~1700 · Check

Queen, rook and two knights

White to play and mate in two.

Position

White
king on f8, queen on e8, rook on e7, knights on a3 and b2, pawns on c2, c4, e4, g2 and g4
Black
king on g5, queen on e5, rooks on e6 and f2, bishops on d3 and f4, knight on f5, pawns on d6 and d7