Region Thermo 1
(Published on 7. February 2026, 10:45 by RedBarchetta)
Rules: Normal Sudoku / Normal Variant rules apply.
Normal: Place the digits 1 to 9 once each in every row, column, and 3x3 box.
Region Sum Lines – Box borders divide blue lines into sections with equal sums. Blue lines and their section sums may be the same as or different from other blue lines and their section sums.
Thermometer – Digits must increase in value along the thermometer from the bulb end.
XV – Digits separated by an X sum to 10. Digits separated by a V sum to 5. Not all XV clues are given.
Commentary Corner: Just some more fun combing two rule sets. This is 1 of 4 for this series. And TBD for those particular commentators.
Links:
Solution code: Row 1 L - R
Comments
on 9. February 2026, 22:15 by VitP
looks intractable ... you have to goodliffe EVERY line before it breaks open, and is quite easy
on 8. February 2026, 12:25 by Franjo
Thank you very much for creating and sharing this lovely snack.
on 7. February 2026, 15:16 by GeorgeTheToad2
Nice duality puzzle.
on 7. February 2026, 11:38 by tomer
nice, I'd rank it 1-1.5 stars
