Day 20: Palindrome lines
(Published on 20. December 2025, 06:00 by SharpFox)
Christmas is approaching...
- Place the digits 1-5 exactly once into every row, column and region (limited by thick black lines).
- Digits on the gray Palindrome line are read the same from both directions. For example the tips of each line contain the same digit.
- Digits strictly increase along a thermometer, starting from the bulb to the tip.
- A black kropki dot joins digits, where one is double the other.
Solution code: Row 1 (5 digits):
Comments
on 23. January 2026, 08:12 by yenja
04:13 very nice, thanks
on 5. January 2026, 23:03 by alm
Hahaha! I restarted 3 times, tried to use digits 1-6 until I realised I'm an idiot.
Thanks for setting.
on 5. January 2026, 22:52 by TheGreyBrewer
Nice little coloring puzzle. 2:40
on 3. January 2026, 16:50 by Kleiner_Lateiner
I colour coded it and inserted the numbers in the end. Got a double Song and Solve at the same time
on 23. December 2025, 01:16 by SanFranSam
Oooh! I didn't think to color the grid. I used letters. ;)
on 22. December 2025, 20:57 by zimmicks
9 minutes thx
on 22. December 2025, 10:00 by Athenodora
解题过程中五颜六色的格子很好看
on 20. December 2025, 18:59 by Supertaster
Lovely little coloring puzzle. Thank you.
on 20. December 2025, 13:21 by rojspencer
Very enjoyable.
on 20. December 2025, 07:28 by Fisherman
Simple but beautiful.
