Isotropic
(Published on 7. March 2026, 05:30 by NicoD)
Rules
Normal sudoku rules apply.
The sum of the digits along an arrow is equal to the digit in the connected circle.
In the finished grid, each 2x2 square of cells has to contain at least one low digit (1/2/3), one middle digit (4/5/6), and one high digit (7/8/9) [Global entropy].
Cells that appear in the same relative position in their 3x3 box must not contain the same number [Disjoint groups].
Solution code: Row 1
Comments
on 13. May 2026, 12:53 by itsid
WONDERFUL!
That was a very beautiful puzzle, took me a second to get the break in since I well I just didn't realized ;-)
AAnyways, once that's been done I started to wonder how that might solve uniquely, and as the train kept rolling it became more and more obvious, that this is just a very beautiful puzzle which just needs to be gently pushed and pulled along it's given track.
Super satisfying.
on 15. March 2026, 19:31 by polcat
Fantastic - thanks!
on 8. March 2026, 22:57 by HeyItsErin
Truly excellent puzzle. One of my favorite uses of Disjoint sets!
on 8. March 2026, 12:50 by Franjo
Thank you very much for creating and sharing this beautiful puzzle.
on 7. March 2026, 10:27 by Snookerfan
Very nice minimalistic puzzle! Easy and fun, thanks
