Initial Setter Difficulty: 3/5
Special Thanks
This puzzle was set for the weekly Scojo discord prompt.
Normal Sudoku rules apply.
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.
Slow Thermometers
Values along a grey line must generally increase from bulb to tip. Values may never decrease, but may remain the same if allowed by other rules.
Yin Yang
Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 area is fully shaded or fully unshaded.
Doublers
The value of a shaded cell is equal to twice the digit it contains (unshaded cells have their digits original value).
To play this puzzle please click here: Play CTC
Hint to Start
There are a few trouble digits in C1 that don't have many happy homes.
This Puzzle
Solution code: Shaded (Doubled) Cells in Column 8 from Top to Bottom (with no spaces or special characters).
on 6. December 2024, 08:14 by Christounet
Nice ! That bottom right thermo is a nasty piece of work. Well done. Thanks :)
on 20. November 2024, 16:14 by WeakSolver
Super fun!
on 20. November 2024, 00:14 by VitP
don't try this puzzle unless you know all the yin/yang tricks.
also: there are TWO possible ways of getting an even VALUE, but only ONE to get an odd value.
Flinty: You only need basic YinYang ideas to solve this puzzle.
on 20. November 2024, 00:07 by HumanBirdsong
What a fantastic puzzle! The combination of constraints here really work together beautifully, well done.
on 19. November 2024, 17:51 by wuc
Great puzzle. I also made some wrong assumptions. But it was a good learning ground for testing all steps again and again before continuing. Great fun thx.
on 19. November 2024, 14:42 by Ratfinkz
Lovely!
Flinty: Thank you, and happy Tuesday. ;)
on 19. November 2024, 05:03 by yttrio
I definitely had to be careful near the beginning to not make bad assumptions about how the slow thermos had to work, but once I got the hang of it everything worked beautifully!
Flinty: You and me both! - haha. I sent Palpot an early break-in draft to test and he found that I had made a logic leap myself. So I incorporated the more ridiculous option he found into the puzzle. Thank you for playing and the kind comment. And a belated thank you to Palpot. I'm particularly proud of this puzzle.
Difficulty: | ![]() |
Rating: | 97 % |
Solved: | 53 times |
Observed: | 6 times |
ID: | 000KT5 |
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