Ring of fire
(Published on 3. May 2026, 18:00 by DJGoose)
Click here to solve the puzzle on SudokuPad
Normal Sudoku rules apply.
Additionally, cells may not share a digit with cells that are a distance of exactly two squares away in any direction, ie knights move and 2 away diagonals.
The shaded cells show where the centre cell prevents a 9 from being placed, but are otherwise entirely cosmetic.
Idea credit to Jaden Lee from the Oxford Cherwell newspaper, this version by me.
I hope you all enjoy, I'd love it if you shared your times in the comments!
Solution code: 2nd row (left to right)
Comments
on 5. May 2026, 09:47 by JVA
Very tough break, had to bifurcate after 30 minutes of nothing. After that, it solves trivially
on 5. May 2026, 09:14 by itsid
yeah nice idea, but I really hate "decoration only" colouring
I usually resort to colours to keep track of options and that pointless red ring really screws that off for no other reason than having a reason to use a puzzle title that's also "meh" (one of the most overrated songs ever)
I get it, don't place similar digit in fiery ring sure, still "meh".
Anyways, very easy puzzle to convey the mechanic, well done!
And if you add a second link to an "uncoloured version" in upcoming installments I'm happy to play.
on 4. May 2026, 02:22 by LeaVulpina
I really liked this!
on 3. May 2026, 19:03 by HeyItsErin
I REALLY liked the break in on this puzzle, and honestly I think I got a bit lucky to catch it as quick as I did. Everything comes together quickly once you get a little momentum and has such a fun flow to it. Great job!
