Rules:
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Bulb-gravitating Thermos: Digits along a thermometer must strictly increase from the bulb end. Moreover, each thermometer is split in two parts by a red cut. The digits on the bulb part must sum to strictly more than the digits on the tip part.
Here you can solve the puzzle online:
Solution code: Column 9 from top to bottom (9 digits in total)
on 25. December 2025, 19:00 by PinkNickels
As a fully committed Goodliffer myself, I love this! haha
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Thank you for your comment, PinkNickels! I am glad we are on this team together. I often try to refrain from over-marking everything, but then I am doing it anyways. :) It is good to hear you enjoyed this puzzle.
Kind regards, sujoyku
on 12. November 2025, 22:46 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
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You are much welcome, Lenivaya_Joppa, thank you for commenting! I am glad that you liked it.
Kind regards, sujoyku
on 11. September 2025, 00:28 by Jen118266
Goodliffing immediately. Fun puzzle. Thank you
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You are much welcome, Jen118266, thank you for commenting! I am glad to hear you did it the Goodliffing way. :)
Kind regards, sujoyku
on 26. August 2025, 19:11 by BG03
The number of times I said to myself in Simon's voice, "I must apologize for that dreadful pencil mark..."
The temptation to liffe it was far too great towards the end!
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Thank you for your comment, GB03! I am glad to hear you gave in to the temptation and liffed up to the task. :)
Kind regards, sujoyku
on 26. August 2025, 06:44 by Crusader175
Super fun! Very nice constraint idea.
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Thank you for your kind words, Crusader175! I am glad you had a fun solve and liked the constraint idea.
Kind regards, sujoyku
on 25. August 2025, 09:13 by Treme
Excellent again!
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Thank you, Treme! It is great to hear that you liked it.
Kind regards, sujoyku
on 25. August 2025, 02:29 by aqjhs
You Only Liffe Once
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Yeah, although not few want to liffe forever. :)
Thank you for your comment, aqjhs!
Kind regards, sujoyku
on 25. August 2025, 00:47 by Exigus
Really cool addition to the thermos. Thanks!
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You are much welcome, Exigus, thank you for your comment! I am glad that you liked this little twist on thermos.
Kind regards, sujoyku
on 24. August 2025, 23:38 by ViKingPrime
Incredible title. 10/10, no notes (the puzzle's good, too <3)
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Thank you, ViKingPrime! Your comment just made me smile. This was a case where, once I thought of the title, I had to set a puzzle for it. Somehow "liffing" made thermos come to mind. :) I am glad that you liked it.
Kind regards, sujoyku
on 24. August 2025, 22:55 by MSDOS
Really neat extension on thermos! Fun logic, great flow, lovely puzzle! Thanks for sharing!
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You are much welcome, MSDOS, thank you for your comment! I am glad you enjoyed this take on thermos.
Kind regards, sujoyku
on 24. August 2025, 20:34 by wilsig
Very clever idea
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Thank you, wilsig! I am glad you liked it.
Kind regards, sujoyku
on 24. August 2025, 19:31 by Franjo
Für den hübschen Einstieg war zu meiner Überraschung gar kein Goodliffing nötig! (Später schon…) Vielen Dank für das tolle Puzzle.
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Sehr gern geschehen, Franjo, vielen Dank für deinen Kommentar! Es freut mich, dass Dir der Einstieg gefallen hat. Ich hoffe, das Goodliffing später war nicht zu schlimm. :)
Herzliche Grüße, sujoyku
on 24. August 2025, 17:00 by cygne
Very nice twist on thermos!
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Thank you, cygne! I am glad you enjoyed this twist.
Kind regards, sujoyku