25.09.2019, 10:54
(25.09.2019, 08:33)jaan schrieb: 8.10 Twilight Pentopia: Is it OK to swap the notation, i.e. leave the pentominoes unshaded and shade everything else?
Yes. Likewise for Cave or basically any other shading puzzle. As long as all cells can be clearly recognized as (one colour) or (other colour), a solution will be accepted.