Seems to me that any move by that rook would not result in checkmate...
Rook has to go to c6 to block the bishop at a8, otherwise the black rook can't move.
So? The king can just capture on e3. It's undefended.
2bishop of the same squares colors?!and also you can move Bxb7 so Kxe3
sorry to everyone i forgot to place the knights!!!!