There's Sum-thing In The Shadows (with sujoyku)
(Published on 2. May 2025, 18:05 by ChinStrap)
Back again with another sujoyku collab, our first Yin Yang together. Thanks to all the testers, and we hope you enjoy!
Rules:
- Normal sudoku rules apply.
- Yin Yang: Shade some cells. All shaded cells are orthogonally connected, and so are all unshaded cells. Every 2x2 contains both shaded and unshaded cells.
- Yin Yang Split Lines: Yin Yang borders split lines into 2 or more segments with the same sum. (If 2 cells are adjacent along the line, they are in the same segment if and only if they have the same shading). Digits may not repeat within a segment. Every line contains both shaded and unshaded cells.
- Segment Counters: A digit in a circle on a line indicates how many total segments that line has.
Below is an example image of how the Yin Yang Split Lines works.
All feedback (positive or critical) appreciated!
Solution code: Row 6 left to right (9 digits)
Comments
on 5. May 2025, 02:42 by QuiltyAsCharged
Excellent puzzle. I found a couple steps in the mid solve truly challenging
on 4. May 2025, 14:50 by Exigus
Great puzzle, thanks!
on 4. May 2025, 12:02 by Snookerfan
Brilliant puzzle! Thank you
on 3. May 2025, 15:21 by Franjo
Combining YY with split lines seems to work very well - as this amazing puzzle proved! Thank you both for creating and sharing this gem. I love it.
on 3. May 2025, 09:44 by Tank
Absolutely wonderful!
on 3. May 2025, 02:12 by damo_89
Very nice. One slightly tricky step in the mid solve and then it all collapsed, 3* for me.
on 3. May 2025, 01:37 by Calvinball
Can confirm these are not Index Lines. Lovely puzzle ya'll!
on 3. May 2025, 00:55 by ViKingPrime
Are we absolutely sure these aren't index lines?
on 2. May 2025, 23:45 by ChinStrap
fixed link
on 2. May 2025, 20:53 by sujoyku
Thank you for this wonderful collab, ChinStrap! Working with you always is a pure pleasure and this puzzle is one that I am super-fond of.
on 2. May 2025, 20:30 by Elliott810
Brilliant puzzle! For me 4* difficulty. Thank you:)
on 2. May 2025, 18:38 by MSDOS
Wonderful puzzle! It had a really good back and forth between the paired constraints!
