Apply normal sudoku rules. Digits along purple lines have a minimum difference of 5. Orthogonally adjacent digits may not have a 1:2 ratio.
Enjoy!
Solution code: Row 6, Column 9
on 17. October 2023, 16:34 by snuuba
Very beautiful and intricate puzzle, enjoyed it quite a lot. Thanks for sharing.
Here is CTC link, I probably wouldn’t have solved it without letters:
https://tinyurl.com/4jz54n6e
on 9. November 2021, 00:53 by abed hawila
tricky mid-solve but rewarding indeed, very nice!
on 3. November 2021, 18:49 by ___
appreciate the feedback!
on 31. October 2021, 14:38 by kaitoJD
The negative constraint on black kropkis is brilliant! That break in was beautiful.
on 29. October 2021, 12:20 by Playmaker6174
Quite hard and tricky (mainly mid solve, unless I missed something obvious), but the final result was surely rewarding. :)