Return of Penpalindromes
(Published on 20. July 2026, 01:22 by cygne)
Return of Penpalindromes by Cygne
Rules
- Normal Sudoku rules apply.
- Digits along a grey Palindrome Line read the same forwards and backwards. The center of the Palindrome Line is indicated by a gray circle for convenience.
- Digits along a red Parity Line alternate between even and odd values.
- Digits separated by a White Kropki Dot are consecutive.
- Digits separated by a Black Kropki Dot are in a 2:1 ratio.
Play in SudokuPad
The tenth puzzle in my Penpalindromes series, returning to setting after a bit of a hiatus, during which time everything I had as a draft in sudokumaker got erased. So here's to starting fresh!
Anyway, I hope you enjoy it! If you do, please give the prior ones a try:
Solution code: Column 9 digits, top to bottom
Comments
on 13. September 2026, 19:00 by itsid
That was a wonderful excercise
I agree it looked intimidating at first, but ones I corner-numbered the palindrome cells and coloured them it quickly fell apart.
The number resolution felt nice.
Liked the puzzle a lot
thanks for sharing
on 22. July 2026, 13:22 by BorisTheSnake
Very strange, solved it, the solution code worked here, but at the end of the puzzle clicking the "Check" button I get the "Uh Oh" that's not the solution.
Loved the puzzle otherwise
on 22. July 2026, 11:42 by matthew.v
Very nice puzzle! Had a lot of fun coloring everything :)
on 20. July 2026, 12:51 by superkinkel
Nice one, is it just me or was the ultimate ambiguous pair in box 1 and 7 only resolvable after finding out some numbers.
Also I only needed the parity line in column 2.
on 20. July 2026, 12:05 by superkinkel
Nice one, is it just me or was the ultimate ambiguous pair in box 1 and 7 only resolvable after finding out some numbers.
Also I only needed the parity line in column 2.
on 20. July 2026, 10:13 by Snookerfan
Very nice coloring puzzle! Thanks
