Shade Your Own Puzzle: YinYang vs Sudoku #1
(Published on 20. August 2024, 19:00 by Playmaker6174)
Back to the main post: the following puzzle is the first part of it and will use inclusion-type arrow in here, the upcoming second part will use exclusion-type arrow but that's meant for the future time.
This one can be quite hard at times since the attention to small details is very important in here, but nothing should really be unfair at all. For now, enjoy the puzzle!
Rules:
- Normal Sudoku rules apply: every row, column and 3x3 box contain digits from 1 to 9 each once.
- Yin Yang: Divide the entire 9x9 grid into two regions of cells with two different shading colors so that each region forms a single orthogonally connected area, and no 2x2 area in the grid may be covered by a single region.
- A digit in a cell with arrow[s] is equal to the combined amount of cells in the indicated direction[s] that share the same color as that arrow cell, not including that arrow cell itself.
- A white dot implies that within the four cells surrounding that dot, the sum of the cells belong to one color must be the same value as the sum of the cells belong to the other color. Not all white dots are given.
A few examples of how some rules work can be found below.
Puzzle: Penpa plus - Sudokupad
Good luck and have fun solving!
Solution code: Enter (from left to right) row 7 with a hyphen '-' for every border between two different shading regions. For example: 123-45-67-89.
Comments
on 27. August 2024, 19:37 by Snookerfan
Brilliant puzzle! Thank you
on 25. August 2024, 18:25 by jacques_
Really nice!! Hard but rewarding, 100 minutes for me
on 23. August 2024, 21:21 by Norkas
Fun puzzle, but I have to agree it's hard. Not too much in any one deduction, but I struggled a fair bit with finding the right places to look.
on 23. August 2024, 13:18 by Niverio
Very nice!
on 23. August 2024, 01:47 by LeaVulpina
What an AMAZING puzzle! It was fascinating how all of the steps were actually much simpler than the way I was initially thinking about it, but everything just required a lot of care and attention over the granular detail. Fabulous. Easily one of my very favourite puzzles.
on 22. August 2024, 18:15 by hgfe
so hard
on 22. August 2024, 16:04 by thoughtbyte
Excellent puzzle. Tough but fair, very fun. Thanks!
on 22. August 2024, 09:29 by MagnusJosefsson
Great puzzle with a diverse set of clever logic!
on 22. August 2024, 03:08 by Calvinball
That was an absolute banger, can't wait for #2!
on 22. August 2024, 00:36 by elpadrinoIV
110 mins of one small step leading to the next all the way until the very end.
I'm between 4.5 and 5 stars. There were no extremely brutal deductions, but a lot of small "you need to spot it" deductions.
Brilliant puzzle, thanks for setting!
on 21. August 2024, 19:19 by 9Rookienumbers
130 min very well spent.
on 21. August 2024, 19:02 by Playmaker6174
Thanks everyone below for solving and for the lovely and detailed feedback! I bump up the estimated difficulty for now.
on 21. August 2024, 03:21 by kamkam
This was an interesting ruleset ! I loved the way the dots disambiguated the sudoku part. However, I'd give it as well 5 stars for difficulty. Thank you :)
on 21. August 2024, 02:37 by bansalsaab
Briiliant setting. 5* hard for me.
on 20. August 2024, 20:44 by cybers
Tricky indeed, but with some really great logic! Was completely stumped and then surprised at multiple points; also loved the white dot mechanic. Thanks for the puzzle!
