For this Sudoku Variants Project I have planned to publish a unique Sudoku variant every week.
Harmonious Thermos
Inspiration for this type comes from sujoyku.
Solve online in Sudokupad.
I will see how long it takes before I am running out of ideas.
Apply classic sudoku rules.
Digits along a thermometer must strictly increase from the bulb end. Additionally, the sum of the digits along a thermometer must be divisible by the number of cells the thermometer passes.
Solution code: Column 9
on 13. June 2026, 14:24 by MikeMeech
Very fun puzzle!
on 9. June 2026, 20:25 by Rollie
Mein siebenhundertneunundneunzigstes Richard Rätsel und mindestens ebenso viele Stunden Rätselvergnügen.
Vielen lieben Dank für Deine unglaublichen und wunderschönen Ideen und Konstruktionen lieber Richard
on 8. June 2026, 19:45 by dzamie
Pretty straightforward, albeit with an external Killer Calculator. I particularly enjoyed boxes 1 and 5 as introductions to how I'd have to think about this clue type.
on 6. June 2026, 01:48 by TeddieMilo
Nice pizzle. I know many solvers are great here and do not need solution checking.. but for newbies like me, it would be good to have it.
on 5. June 2026, 23:06 by sujoyku
Thank you for this fun puzzle, Richard!
on 5. June 2026, 21:55 by JVA
Maybe I missed something obvious but boxes 1-2 felt like a huge difficulty spike
on 5. June 2026, 09:38 by Franjo
Thank you very much for creating and sharing another lovely and approachable SVS-puzzle.
on 5. June 2026, 09:28 by Nylimb
Very smooth solution path. Thanks!