Dancing in a ring
(Published on 10. March 2026, 12:10 by Fool on Hill)
Puzzle rules
Normal Sudoku rules apply.
On a green line adjacent digits must differ by at least 5 (standard German whisper)
Digits on a pink Renban line form a consecutive sequence with no repeats. The central cross is a single line.
If two digits are separated by a black dot, one must be twice the other. Two digits separated by a white dot are consecutive. (partial Kropki)
Here is the Sudokupad link: Dancing in a ring
If you enjoyed this puzzle you might try N is for Naomi. It is a rather harder puzzle than this one - partly because It uses Dutch whispers. The logic bears a family resemblance to this puzzle, and if you have really understood all the logic of this one, you should be able to do "N is for Naomi" with some care and thought.
.Solution code: Row 6
Comments
on 21. March 2026, 18:12 by Fool on Hill
Add link to harder follow-up puzzle
on 17. March 2026, 10:14 by AnebodaSlatorp
Great thank you
on 16. March 2026, 02:23 by Kleiner_Lateiner
pretty straight forward
___________________
Of course it can feel straightforward, and indeed if a solver sees all the logic cleanly the puzzle can be solved in a 1* time (some people have reported such times in response to the CTC video). The more logic you see quickly, the easier it gets. But it can be quite hard for people who don't see/know the logic and rather longer times have also been posted. It is difficult to rate such a puzzle for difficulty - I knew that solving experiences would be quite varied. I am happy that everyone pitches in with their own view. Thanks for solving, and for commenting. (Fool on Hill)
on 15. March 2026, 07:24 by Klausku
Brilliant construction. Thanks
on 14. March 2026, 22:45 by bboom
Lovely puzzle. Looks great, and much smoother to solve than you would expect looking at it at first
on 14. March 2026, 16:21 by Christounet
Clever setup! Thanks :)
on 14. March 2026, 02:32 by haddocksmack
This could possibly be my favorite sudoku I've ever solved! It seemed to surprise me over and over and I thought some of the logic was quite brilliant!
on 14. March 2026, 01:13 by Perladel
Just moving: not only that, but also after that...
on 12. March 2026, 14:32 by Agent
That was neat!
on 12. March 2026, 05:10 by Norkas
Very fun idea behind the puzzle.
on 11. March 2026, 10:26 by Snookerfan
Great puzzle! Thanks
on 11. March 2026, 06:24 by ZigZagWonderer
Fantastic puzzle, thank you!
on 11. March 2026, 04:46 by Crusader175
Brilliant!
on 11. March 2026, 03:28 by Playmaker6174
Sweet and fun puzzle with nice use of the main trick throughout the solve x)
on 11. March 2026, 02:36 by Ragna
Fun puzzle! Not so easy. Thank you. :-)
on 10. March 2026, 21:15 by damo_89
Very nice and not so hard if you see what is going on.
on 10. March 2026, 18:47 by GeorgeTheToad2
The title helped me to break in. Lots of interesting tricks of the trade need to be used to crack this open. 3* difficulty and a beautifully constructed puzzle.
on 10. March 2026, 18:45 by Myfyr MJ
Very nice but challenging. The interaction between the PR and the digits on the GW was brilliant. Took me 48 minutes.
on 10. March 2026, 16:27 by mihel111
+1 to jmw. That was really beautiful.
on 10. March 2026, 15:39 by jmw
Brilliant puzzle. Not particularly difficult (at least, for anyone who recognises the geometry), but you've managed to combine some familiar tricks in a way that feels genuinely novel, which I can't imagine is easy to do.
on 10. March 2026, 15:31 by EmX68
Really nice puzzle!
