Maxwell's puzzling demon v1.2.7
Author: muratsubo,
published 21 hours ago,
[h3]Levels update[/h3]
[list]
[*]The hint feature is now available in all the worlds.
[*]Add [spoiler]0-23, 0-24, 0-25 and 0-26[/spoiler].
[*]Fixed 6-M, 6-N, 6-O and 9-M to prevent unintended solutions.
[/list]