Some Kind of Chaos
(Published on 24. May 2024, 09:25 by marty_sears)
Thanks again to BlackjackFitz for inventing the marvellous Somedoku format. I am finding it so fun and flexible to set with!
Rules:
- SOMEDOKU: Fill the grid with the digits 1-9. Each row N and column N contain exactly N distinct digits, with the rest of the row / column being filled with repeats.
- CHAOS CONSTRUCTION: Divide the grid into 9 regions, each containing 9 orthogonally connected cells. The finished pattern of regions will have 180 degree rotational symmetry.
- CIRCLES: The digit in a circle indicates how many distinct digits appear in its region. Eg: A 6 in a circle indicates that the region includes 6 distinct digits (and 3 repeats.) No two circles contain the same digit.
- REGION SUM LINES: Region borders divide blue lines into segments, each of which have the same sum. Each blue line must cross at least one region border.
Please leave a comment if you enjoy :)
Solution code: Column 9 reading downwards
Comments
yesterday, 04:33 by Clementi
Another beaut.
I found it a lot more approachable than the 5* rating suggested - maybe a 3 or 3½? The CC symmetry rule made deducing the regions relatively straightforward...I thought finding the regions would be at least half the battle, but it turns out there was plenty more head scratching to go after that.
on 9. March 2025, 00:08 by the1andonlycone
Utterly mind blowing! I have never had so much fun with a puzzle this difficult. Keep it up!
on 1. February 2025, 17:14 by bboom
Another amazing puzzle, loved the deductions in it, and how it looks daunting but actually gives way reasonably easily. The 180 degree symmetry is a really fun rule to combine with this kind of construction.
on 29. January 2025, 22:15 by mscha
Wow, I've solved a 5⭐ puzzle for the first time ever! And it only took me 3½ hours...
Difficult, but fair. Everything was deducible ... eventually.
on 11. January 2025, 02:24 by mir85
Fantastic puzzle! I on the other hand made so many mistakes, I don't think you could call what I did for a solve. Got there in the end though :)
on 6. January 2025, 03:36 by ViKingPrime
...and this is why we call him 'Mad Marty'.
on 28. July 2024, 19:07 by dpatti
I must have spent half of my solve waiting for it to break, revealing a bad deduction I made an hour ago. The suspense until the last digit made for an immensely satisfying finish. So incredible!
on 6. July 2024, 01:17 by ChinStrap
Wonderful. CC + somedoku clearly are a great combo
on 11. June 2024, 16:33 by ONeill
Smooth and enjoyable, especially once you remember the symmetry rule after 30 minutes :D
on 6. June 2024, 21:12 by QuiltyAsCharged
Wow, brilliant! It was quite a journey finding the symmetry in the chaos
on 30. May 2024, 15:03 by MagnusJosefsson
Fantastic, very enjoyable!
on 27. May 2024, 04:23 by Ratfinkz
Beautiful!
on 27. May 2024, 02:31 by juggler
Brilliant puzzle, the symmetry aspect to the region building was really fun to figure out!
on 26. May 2024, 00:46 by MxTery
Lovely puzzle! I was a bit confused by the wording on the "somedoku" rule, but it was only my own misconceptions.
on 24. May 2024, 16:48 by Jesper
Really funky CC concept, enjoyed it, thanks!
on 24. May 2024, 13:01 by BBB
Very nice! Enjoyed it, thank you
