Look again at the edited post.
One doesn't have to be a chess master to know that it's impossible.
You mean that it's an impossible setup, or that it's impossible for white to win in one move?
ETA: well, I realized it's an impossible setup, because the black bishop can't be out without the pawns moving... (7a or 7c)
ETA: my mistake. I'm rusty at chess and thought that the bishop goes in position 2. I'm mixed it up with the horse. Now I'm confused again.