Mate in 1 · No. 255 · Predicted ~1300

Queen, rook and bishop

White to play and mate in one.

Position

White: king on g1, queen on h7, rook on b1, bishop on g3, pawns on a4, b3, b4, c4 and d3
Black: king on e8, queen on b7, rooks on c8 and d8, bishop on a3, pawns on d7, e5, e7, f6 and h6