Region Sum Thermos
(Published on 15. March 2026, 16:28 by RailMan)
Normal Sudoku rules apply. Place the digits 1 - 9 once in every row, column and box.
Thermometers: Digits on a thermometer must increase from the bulb end.
Region Sum Lines: Blue lines are Region Sum Lines. Box borders divide them into segments with the same sum. Different lines may have different sums.
For clarity: Every thermometer (including the bulb) is also a region sum line.
Solve Online : Solution Check is enabled
Solution code: Row 9
Comments
on 21. March 2026, 21:02 by NCtide
Fantastic execution of a great combination ruleset. Really enjoyed this one
on 17. March 2026, 14:45 by VitP
level 1.
use the simon style. avoid goodliffing here
RailMan: That's good advice for this puzzle.
on 16. March 2026, 19:11 by Stullenesser
That was a lot of fun to solve,
thank you :)
RailMan: Thank you
on 16. March 2026, 17:33 by fractalminding
Quite a nice sudoku ❤️
RailMan: Thank you
on 16. March 2026, 16:01 by sujoyku
Thank you for this lovely puzzle, RailMan!
RailMan: Thank you
on 15. March 2026, 17:17 by GeorgeTheToad2
Lovely combo.
RailMan: Thank you
