Chaos Deconstruction: Sightlines
(Published on 11. June 2023, 00:07 by KNT)
If a cell with an arrow or arrows is nonempty, the number placed in that cell indicates the number of cells seen in the indicated directions combined (including itself). Region borders and empty cells obstruct vision. If a cell with an arrow or arrows is empty, there must be at least one empty cell in the direction of each arrow in that cell.
A 1-6 example is provided:
Solution code: Row 11, Column 4, X for empty cell.
Comments
on 23. April 2024, 01:09 by Piatato
Excellent! So much fun and varied logic to uncover!
on 24. November 2023, 18:42 by Chilly
Great puzzle - really fun to solve - despite messing up by misreading the arrows a couple of times, didn't ever feel like this was super difficult.
on 2. September 2023, 12:55 by ibag
Brilliant!
on 25. July 2023, 18:48 by mnasti2
Very smooth and great fun!
on 22. June 2023, 15:46 by BHUNTER47
What a fantastic puzzle. Absolutely amazing.
on 18. June 2023, 09:44 by dennischen
Really tricky, and really clever!
on 16. June 2023, 16:56 by marcmees
Not a fan of deconstruction, but fan of Chaos. Thanks for this amazing puzzle.
on 14. June 2023, 12:41 by madhupt
What a beautiful and magnificent puzzle again from @KNT. I’m so pleased to have solved it without erring even once on the extremely smooth solve path. It was very tough for me but never despairing. Thanks a lot for sharing.
on 14. June 2023, 00:41 by MaizeGator
Awesome puzzle. The incorporation of blank cells really messed with my brain and disrupted the logic that I thought I'd learned in Ariadne and Oenopion. I broke this puzzle 3 times but persevered!
on 13. June 2023, 11:48 by tim kenyon
smooth logical path, i like it
on 13. June 2023, 09:07 by twobear
Great puzzle. Thank you!
on 12. June 2023, 21:21 by KNT
@washyleopard: At first glance that might seem true, but upon a closer look at the grid (and example puzzle) you should realize an empty grid does not satisfy all the rules.
on 12. June 2023, 21:19 by washyleopard
If you take a liberal definition of "some" in the first rule to also include 0, then the blank grid is technically a correct solution to this puzzle.
@KNT you're right, I thought of that before even starting the puzzle, this is how you are meant to break in I suppose.
on 12. June 2023, 08:51 by Christounet
Superb ! Fell into all the little traps I could find on my way, just to make the entertainment last a bit longer ;) Thanks !
on 11. June 2023, 22:20 by Niverio
Loads of fun, not too difficult, unique, what is not to like?
on 11. June 2023, 20:36 by thoughtbyte
Excellent fun! Tough, but always fair and very smooth. Thanks!
on 11. June 2023, 19:09 by ONeill
Very fun puzzle, the difficulty was perfect for me :) Thanks!
on 11. June 2023, 18:35 by Jesper
Wonderful puzzle, loads of interesting deductions!
on 11. June 2023, 18:10 by Myxo
In Pfiffigkeit nicht mehr zu übertreffen!
on 11. June 2023, 06:54 by Agent
Fantastic puzzle! This feels like a substantial improvement of an already very good ruleset. There was a point in the solve where basically all the digits got resolved at once, that was the icing on the cake.
on 11. June 2023, 02:44 by Koalagator2
Extremely fun puzzle, very smooth. This was definitly one of my favourites of yours.
on 11. June 2023, 01:30 by RJBlarmo
Very clever puzzle, also one of my favorites of yours!
on 11. June 2023, 00:43 by KNT
@MaizeGator: No, they need not be orthogonally adjacent. For example, examine R6C5 in the sample puzzle: there must be at least one empty cell to its left, and at least one empty cell above it. The empty cell to its left is satisfied by R6C1, and any of R[1-4]C5 could satisfy as the target empty cell above the clue.
on 11. June 2023, 00:32 by MaizeGator
Quick rule clarification: The minimum one empty cell that an arrow in an empty cell references does not necessarily need to be orthogonally adjacent? This seems obvious from the example puzzle, but it isn't clear to me in the instructions.
on 11. June 2023, 00:10 by wooferzfg
I absolutely loved this puzzle. A really nice variety of interesting and challenging region geometry logic, with very smooth irregular sudoku at the end. One of my favorite puzzles of yours :)
