Normal Sudoku rules apply.
Thermometer: digits increase, starting from the bulb.
Digits on each green line have a difference of at least 5 to their neighbors.
Digits on each purple line form a group of consecutive digits in any order.
Digits separated by a black dot have a ratio of 1:2. Digits separated by a white dot are consecutive. Not all possible dots are given.
Sudokupad: Link to Sudokupad
F-Puzzles-Link: F-Puzzles link
Solution code: the bottom row from left to right
on 7. February 2026, 11:49 by wuc
Break in and one step 2*. The rest 1*. Fun solve thx.
on 7. February 2026, 00:48 by wuc
Break in and one step 2*. The rest 1*. Fun solve thx.
on 7. February 2026, 00:45 by Titan29
There are an abundance of German Whisper/Renban/Thermometer puzzles. Despite that, this one was very fun and memorable! Also I would say 2* is accurate.
on 6. February 2026, 21:49 by anothermember
Fun solve, not over too quickly but I didn't find any one step particularly technical. I'd rate it on the easier end of 2*.
on 6. February 2026, 20:20 by Myfyr MJ
Very nice. I note that it has increased from 1 star difficulty to 2 star difficulty during my solve. Dare I suggest 3 star difficulty for this one as it took me 58 minutes to solve it. Definitely not easy.
on 6. February 2026, 17:57 by Playmaker6174
Not that easy for me for sure, but I still had some fun time there :)
| Difficulty: | ![]() |
| Rating: | 93 % |
| Solved: | 166 times |
| Observed: | 0 times |
| ID: | 000RC9 |
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