Subzero
(Published on 26. August 2023, 23:29 by Schwupel)
Huge thank you and credit to Packattack25 who came up with the idea and the breakin for his first ever puzzle. I helped with smoothing out the later parts of the solve and I think the result is very pleasing and has to be shared.
This is probably around 3.5 difficulty. I added some hints to the key parts of the solve to make it qualify as a 3 star puzzle. You will need some basic knowledge of yin yang. Have fun solving!
Rules:
Sudoku - Place the digits from 1-9 in every row, column and box exactly once.
Yin Yang - Each cell in the grid has to be marked either hot or cold such that
* all hot cells form a single orthononally connected region
* all cold cells form a single orthogonally connected region
* no 2x2 area is entirely hot or cold
Thermometer - Values on a thermometer must be increasing from the round bulb to the tip. Cold cells on a thermometer are considered to be negative values.
Play Online:
Hints:
Hints are written in white in the following paragraph. If you want too look at one, highlight the text.
Break-in:
The 11 cell thermo gives some shading + remember that no 2x2 area can be entirely hot or cold
Hint 2:
The second long thermo might be a little restricted now
Hint 3:
You should have gotten the perimeter by now. How can the hot region be connected?
Hint 4:
You are probably missing some sudoku. Think about high digits.
Hint 5:
Now the thermo in box 9 is quite restricted. Which options are left and what do they have in common?
Solution code: Column 1 from top to bottom.
Comments
on 31. July 2024, 23:19 by wuc
Very clever puzzle. Loved the refreshing logic. Great fun to play thx.
on 4. November 2023, 19:16 by Nightmare2805
That puzzle was fun to solve.
on 25. September 2023, 08:57 by gdc
Incredibly interesting logic in this one. Well done Packattack25 and Schwupel! Difficulty is around 2.5 in my opinion.
on 31. August 2023, 22:09 by elnahal
Great puzzle. I made a silly mistake close to the start several times in a row causing me to break it more time than I want to admit. Fantastic debut.
on 30. August 2023, 19:45 by DaniK
What a beautiful puzzle! I had a lot of fun solving it.
on 29. August 2023, 20:21 by Klausku
Very nice ruleset. I had a lot of fun and some aha-moments. Thanks.
on 28. August 2023, 22:18 by samuel1997
Very well constructed! Nice debut!
on 28. August 2023, 12:23 by Playmaker6174
Started out fairly easy, then it got progressively trickier later on but the overall solve was lots of fun with some good aha moments. Thanks for this :)
on 27. August 2023, 20:36 by GemmaOane
I really loved the puzzle and the idea with negative counting digits on thermometers in combination with yin and yang. Definetely one of the harder three star puzzles but really enjoyable!
on 27. August 2023, 16:50 by Snaques
Ying Yang puzzles always feel a bit overwhelming when you start them, but usually you are glad you did start.
This was another really fun puzzle with a lot going on.
Thank you both!
on 27. August 2023, 15:23 by kamkam
Loved that ruleset ! Very enjoyable sudoku
on 27. August 2023, 14:57 by WvdWest
Very nice puzzle. Good to solve with a nice flow.
on 27. August 2023, 11:21 by worsted
好耶！
* 谢谢.
on 27. August 2023, 00:31 by thoughtbyte
Excellent puzzle! Smooth and very fun! Thanks Packattack25 and Schwupel!
* Thanks! I'm happy you enjoyed.
on 27. August 2023, 00:11 by Calvinball
Very cool combination of rules! (pun intended)
Thank you both for this gem.
* Thank you for the warm words.
