Yin-Yang Sight Lines
(Published on 16. January 2023, 16:00 by Blobz)
Normal sudoku rules apply.
Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected and no 2x2 area may be fully shaded or unshaded.
White dots lie on the border between the shaded and unshaded regions. Additionally, white dots separate consecutive digits. Not all possible dots are shown.
Digits in caged cells show the number of cells of the same color (shaded or unshaded) seen orthogonally from that position, including itself. The "other" color blocks vision.
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 4 followed by Row 6
Comments
on 28. July 2024, 18:30 by wuc
I love the YY rule. Looking foreward to tackle the whole series. Thanks for sharing.
on 10. November 2023, 10:36 by elpadrinoIV
I started with YYSL X-Sums. Now I want to do all your YY sudokus. Just us the other one, amazing job. Thanks!
on 5. October 2023, 17:59 by LeaVulpina
I tried this months ago and gave up when I couldn't do it. I'm so glad I came back to it though, because this was a really fun solve!
on 2. September 2023, 13:40 by mayflower
This took me two hours, but I am so glad I persevered through it, because it was such a joy to solve. The way the different constraints combined felt so natural, and I was never stuck for too long, even though it was really well-crafted logic. Thanks for sharing this!
on 27. January 2023, 04:15 by Calvinball
Thank you, thank you, and thank you. It was a privilege to solve this puzzle.
Thanks for taking the time to set this!
on 19. January 2023, 15:32 by Wonderment
I love this puzzle. Such a fun ruleset.
on 19. January 2023, 01:14 by picoton
yin yang and sudoku fit really well together. i wish there were more puzzles with this ruleset!
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YYSL-2 published Feb 10th.
Y1n-Y9ng SL Star Battle published Mar 24th.
~Blobz
on 18. January 2023, 03:11 by szabog
Thank you, it is a very clever ruleset, I would solve more like this.
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YYSL-2 published Feb 10th.
Y1n-Y9ng SL Star Battle published Mar 24th.
~Blobz
on 17. January 2023, 13:05 by Snookerfan
Lovely puzzle, smooth all the way through! Thank you
on 17. January 2023, 10:44 by madhupt
Very nice puzzle. The flow of logic was very smooth.
on 17. January 2023, 03:02 by mathpesto
Had a lot of fun solving this one, very clever ruleset :)
