Mate in 1 · No. 252 · Predicted ~700

Queen, two rooks and two bishops

White to play and mate in one.

Position

White
king on g1, queen on a8, rooks on a1 and b1, bishops on e1 and e4, pawns on b2, b3, c4, d2, h2 and h3
Black
king on h6, queen on f6, rooks on e7 and h8, bishops on d7 and g5, pawns on a5, b5, c5, d5, e5 and g7