Yajilin/Castle Wall
(Published on 12. April 2020, 21:08 by Puzzle_Maestro)
Blacken some cells, such that no two blackened cells touch each other orthogonally. Then draw a loop passing through all remaining cells. The loop may not pass through clue cells. The clues either represent the number of blackened cells in the given direction or the total length of segments in the given direction: i.e. they are either Yajilin or Castle Wall clues.
Clues may be valid as Yajilin and Castle Wall clues, i.e. they give both the number of blackened cells and the length of segments.
Solution code: Enter the number of times the loop turns in each row from top to bottom.
Comments
on 17. May 2024, 08:08 by Piatato
Lovely hybrid, thanks!
on 21. January 2022, 17:24 by Vebby
Link to solve on Penpa+ with answer check (green lines + blackened cell shading): https://tinyurl.com/yckkh5k8
on 13. April 2020, 19:23 by Dandelo
And there are also neutral clues in some Castle Walls. Why not all?
on 13. April 2020, 18:13 by Puzzle_Maestro
@JonaS2010 I was not aware of this puzzle, thanks for sharing! I think I have seen this idea used elsewhere, although I cannot remember.
on 13. April 2020, 17:52 by JonaS2010
That was fun! I made a puzzle with the same rules a while ago: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0002NX
Did you know about this or did you come up with it independently?
Also, @Feadoor: My Yajilin contest from last year has two hybrids which include the inside/outside clues.
on 13. April 2020, 09:40 by Puzzle_Maestro
Rule clarification
on 13. April 2020, 09:38 by Puzzle_Maestro
@jessica6 it is not a strict "either or": clues may give both the number of blackened cells and the length of segments.
on 13. April 2020, 07:53 by Puzzle_Maestro
@Feadoor you’re probably right, but I’m not sure how to rename it... although in a lot of castle wall puzzles, the inside/outside constraints are only used trivially.
on 13. April 2020, 00:06 by Feadoor
Calling this a Castle Wall hybrid feels funny to me, as I would say that the defining characteristic of a Castle Wall is the topological inside/outside the loop constraints. But maybe that's just me...
on 12. April 2020, 23:44 by jessica6
is this a strict "either or", that is, a clue which gives both the number of blackened cells AND length of segments in that direction is not allowed?
