Modular Penpalindromes
(Published on 14. November 2025, 03:50 by cygne)
Modular Penpalindromes by Cygne
Rules
- Normal Sudoku rules apply.
- Digits along a gray palindrome line read the same forwards and backwards.
- Any group of three adjacent digits along teal outlined sections of a palindrome line must contain digits with distinct values modulo 3. (Sets with the same values mod 3 are [1,4,7], [2,5,8] and [3,6,9]).
- 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 fifth puzzle in my Penpalindromes series. Hope you enjoy! If you do, please give the prior ones a try:
Solution code: Column 5, top to bottom
Solved by jalebc, tuturitu, jordanza, Fisherman, Megalobrainiac, gxorgx, SKORP17, dickey, dkfan9, deltameth, owler, by81996672, jadezki, damo_89, npinguy, Altynbek , QuiltyAsCharged, LabRat, bpcobra96, Chipmunk, TaeChi, Jdt112, zuzanina, Shmartus, abihummel, seven-seas, paranoid
Comments
on 17. November 2025, 13:30 by QuiltyAsCharged
Very nice - this was a tough one!
on 15. November 2025, 19:54 by damo_89
Some tricky spots here, took a while to get going.
on 14. November 2025, 19:05 by dkfan9
Really nice! Tough and rewarding.
