Palindrome coloring
(Published on 24. August 2026, 02:04 by Artham)
- Normal sudoku rules apply.
- For each of the five coloured loops, there is a way to slice it between two of its digits so that the resulting line (starting at one side of the cut, following along the loop away from the cut, and reaching to the other side of the cut) is a palindrome line.
- Digits on a palindrome line read the same forward and backwards.
- Consecutive digits cannot sum to 10.
- Digits in a cage sum to the number in the top left corner of that cage.
Solution code: Row 5 from left to right
Solved by mathpesto, Ipit, SincereEngineer, jalebc, ZornsLemon, SKORP17, dogfarts, joelagibbs, Aaravos, QuiltyAsCharged, claymategirl, zuzanina, kangaroo, karen_birgitta
Comments
on 26. August 2026, 16:05 by QuiltyAsCharged
This was very enjoyable! I've done similar puzzles before, but the looped palindromes added an interesting new wrinkle. And then it was cool to see how the digits were disambiguated
