Degeneracy
(Published on 3. June 2026, 05:30 by NicoD)
Rules
Normal sudoku rules apply.
A digit in row 1 indicates the row in which the digit 1 appears in that column.
Every set of three adjacent digits along a peach line contains one low digit (123), one middle digit (456), and one high digit (789).
Additionally, in the finished grid, each 2x2 square of cells has to contain at least one low digit, one middle digit, and one high digit [Global entropy].
Solution code: Row 5
Comments
on 4. June 2026, 22:41 by yuripuppies
Very fun puzzle!
on 4. June 2026, 17:20 by HeyItsErin
Beautiful build up to a very clever climax. Bravo!
on 4. June 2026, 15:31 by Jrosas
This is my favorite kind of puzzle. The rules are easy to remember and they don’t interact much. I spent a lot of time learning what was wrong with my understanding of how the rules work, but never re-read them because they are straightforward. It made the moment I saw how to solve the puzzle very enjoyable.
on 4. June 2026, 06:04 by Srinidhi Kabra
A beautiful colouring exercise! Thanks for this amazing puzzle
on 3. June 2026, 22:49 by Snaques
I hate that the 159 ruleset isn't more popular so this was a nice reminder how fun these "reference puzzles" can be. Thoroughly enjoyed it and there were couple of pretty rewarding moments that came out of nowhere,
Very nicely done!
on 3. June 2026, 20:38 by LisaFr
I loved the break-in, unfortunately everything after just felt like busywork. Overall still a nice puzzle!
on 3. June 2026, 14:55 by EmX68
Beautiful!
on 3. June 2026, 12:08 by mihel111
Very doable with a spectacular ending.
Great one.
on 3. June 2026, 10:56 by Major314
Outstanding !
on 3. June 2026, 10:50 by polcat
How do you do it?! Another incredible puzzle. Thank you.
on 3. June 2026, 10:42 by anothermember
Quite a mindbender this one, so many point where you think it'll never solve. Fantastic!
on 3. June 2026, 09:29 by mathics
Amazing!
on 3. June 2026, 09:11 by Snookerfan
Wonderful setup and solve, which made a quite approachable puzzle. Thanks
on 3. June 2026, 09:08 by Chaka
Fantastic flow after you've figured out how to approach this one!
on 3. June 2026, 08:33 by lars
Very fun solve!
