Mate in 1 · No. 80 · Predicted ~900

Two rooks and bishop

White to play and mate in one.

Position

White: king on g1, rooks on e1 and h1, bishop on b3, pawns on a3, f4 and g3
Black: king on f6, rooks on c7 and f7, knight on f5, pawns on a7, c5, g6 and g7