Mate in 1 · No. 246 · Predicted ~700

Queen and rook

White to play and mate in one.

Position

White: king on h2, queen on a5, rook on f1, pawns on d2, e4, f3, f4, g3 and g4
Black: king on g8, queen on h7, rooks on b7 and f6, bishop on a6, pawns on f7, g7 and h6