Top players enter! See if this eight-character is six squares inside or eighteen squares outside.

You are correcting ancient books. I don't know if your level is enough, don't change it. Everything in ancient books is the law of fortune telling. It would be neither fish nor fowl, and I would be at a loss. No grid; There are no inner six squares; The rule is, positive eight-lattice,,,,,, and outer lattice; ,,,,, and 18 or more; This eight-character is a positive print. Enter the criteria.