Fluorescence
(Published on 26. March 2026, 08:51 by balpha)
Normal 6x6 Sudoku rules apply.
Adjacent digits on the neon green line are not consecutive.
Orthogonally adjacent digits separated by an ultraviolet dot have a common divisor that is greater than 1.
All possible UV dots are given, but of course you cannot see them. I promise there are exactly two.
Solution code: Row 6 (bottom row)
Comments
on 29. March 2026, 22:16 by randomra
Very nice construction and discovery! The solve path is very smooth and gradual!
[balpha:] Thanks for playing, and for the nice feedback!
on 26. March 2026, 18:48 by RailMan
Very surprising and interesting. Thanks for sharing it.
[balpha:] Thank you! Indeed, I was a little surprised myself when I stumbled over this.
on 26. March 2026, 11:12 by zeniko
After staring at the grid for a bit, I think I can see these two points… nice geometry. Thanks for sharing.
[balpha:] You must have good eyes if they reach the UV spectrum :D Appreciate the comment!
