Snakes of Chaos
(Published on 14. January 2025, 15:59 by Andrewsarchus)
Rules:
- Normal 10x10 Irregular Sudoku rules apply.
- The solver must deduce the regions. Each region is a one-cell wide path which does not branch and does not touch itself, not even diagonally.
- The digit 0 has a value of 10 for the purpose of indexing.
- Clues outside of the grid show the region borders of the Nth cell from the clue, where N is the value in the cell closest to the clue. If the outside clue also contains a digit, then it is also a numbered rooms clue, and that digit also appears in the Nth cell.
Example:
Play Online:
sudokupad: Snakes of Chaos
Solution code: Row 5 left to right with dashes to represent region borders
Comments
on 9. February 2025, 10:50 by AnnaTh
Great fun!
on 31. January 2025, 15:51 by Jesper
Very nice! Unusual and interesting concept.
on 25. January 2025, 23:03 by Christounet
Awesome twist of the numbered room concept. Thanks :)
on 22. January 2025, 20:52 by Chilly
Brilliant stuff - super fun all the way through!
on 22. January 2025, 04:20 by Silverstep
Don't let the difficulty rating fool you -- this is just a standard Numbered Rooms puzzle, with normal Numbered Rooms logic!
on 21. January 2025, 18:28 by Niverio
Amazing CC! Very fun all the way through with some very unique logic!
on 20. January 2025, 22:41 by Voidslime
Very fun!
on 20. January 2025, 05:27 by Gnosis66
Fantastic!
on 19. January 2025, 01:24 by Agent
An original ruleset and smooth solve, thanks!
on 19. January 2025, 00:28 by kamkam
This is exactly what I'd call masterpiece !
on 17. January 2025, 21:00 by kurako
Amazing puzzle. Logic chains / region builds felt very fair and very satisfying. Great work!
on 17. January 2025, 20:46 by Andrewsarchus
updated example image
on 17. January 2025, 19:17 by koba1917
Wow! One of my favorite puzzles of all time! Only thing I'd comment is your example isn't accurate (and it caused me a lot of confusion) as some of the clues don't properly show the outside border.
--
good catch - the example was made in haste. Now Updated - thanks!
--Andrewsarchus
on 17. January 2025, 04:19 by pecha_berrie
WOW, this puzzle was phenomenal to solve!! I truly enjoyed every single one of the four hours I spent on it! :D the logic here is absolutely brilliant, well done!
on 17. January 2025, 00:13 by ONeill
Very cool puzzle!
on 16. January 2025, 21:22 by Andrewsarchus
added example
on 16. January 2025, 18:53 by Snookerfan
Fantastic puzzle! I found it very hard to start, but after some key deductions, the regions almost built themselves. The endgame sudoku was easy, which I enjoyed after the hard region building. Thank you for this masterpiece.
on 16. January 2025, 18:40 by SenatorGronk
The clue above Column 1 has two vertical lines, so I expected at least one of the clues on the left of the grid to match it. Because none of them do, should I assume that clues don’t always represent all of the borders in a cell? And does this mean that a clue with a 1 or 0 doesn’t necessarily include a border representing the outside of the grid?
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I've added an example. Note how the example also has a clue above Column_1 that does not appear to the left of the puzzle. Each clue represents all of the target cell's borders, including the outside grid borders.
--Andrewsarchus
———
Duh, makes sense. I was being a little thick, thanks!
on 16. January 2025, 18:09 by twobear
Confirming henrypijames‘ comment: the snake constraint doesn’t have to be used; still a very smooth solve
on 16. January 2025, 06:23 by Norkas
Very well set puzzle. Took me a while to get comfortable with the ruleset, but after making some deductions the rest followed fairly naturally.
on 16. January 2025, 01:47 by askaksaksask
This was truly a joy to solve. Start to finish. The break in/ beginning of the puzzle is more taxing than the latter bits of solve, but every step is so clean and the ruleset is magnificent. Great, novel CC puzzle. Thank you!!
on 15. January 2025, 23:34 by prodigis
Another insane looking grid from you, and another wonderful solving experience
on 15. January 2025, 14:42 by henrypijames
I'd like to report that I've solved the puzzle without ever using the snake constraint - simply because I forgot it until I was already finishing up.
on 15. January 2025, 14:39 by Franjo
Great CC-puzzle! Challenging, but not too hard - for me, thanks to the perfect setting. Thank you so much for creating and sharing this wonderful masterpiece.
on 15. January 2025, 12:17 by Myxo
Beautiful construction! It had an oldschool CC feel for me.
on 15. January 2025, 03:03 by nassausolver
Started this puzzle thinking I had no chance. About 2 hours later, I triumphantly entered my last digit. What an incredible puzzle, maybe my favourite ever. A gorgeous solve path, magnificent logic and a beautifully unique ruleset. Excuse me while I now go attempt every puzzle you've ever created.
on 14. January 2025, 22:34 by marcmees
Very rewarding solve. Tough at the start but gets easier halfway through. Fantasticly weird/original CC puzzle. Thanks
on 14. January 2025, 17:17 by Steven R
Fantastic puzzle. Loved it!
