The End of Daisies
(Published on 25. June 2024, 12:34 by Abdul the Killer)
Standard Sudoku rules apply.
SHADING: In the completed grid, cells containing numbers exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
YIN YANG: The shaded cells form a single orthogonally connected region, as do the unshaded cells. No 2x2 region is wholly shaded or unshaded.
DAISIES: Values in cells with daisies give the number of shaded cells in the (up to 8) surrounding cells. All possible daisies are given.
Solution code: Row 4
Comments
on 3. October 2024, 18:14 by Shuhua Milk
Nice!
on 30. June 2024, 19:57 by Nemefish
Apparently this solves without the negative constraint, because I completely forgot about it until after the solve. It probably would have significantly helped my solve time. After a very long but satisfying wrestle, the last digits flew in.
I liked the puzzle so much I tried it a second time using all the rules and it does solve a bit easier, but still a challenge, and you can't check part way to know if you are on the right track.
on 28. June 2024, 23:18 by Abdul the Killer
Thanks to the most recent commenters for their kind remarks.
It is gratifying that these recent Yin Yang puzzles have been so well received. I have more in the pipeline, I hope they live up to the same standard.
on 27. June 2024, 20:23 by fortunia27
Absolutely beautiful! Truly loved it
on 27. June 2024, 11:30 by puzzlepandit
Negative constraints in these puzzles takes time to solve the puzzle. But once solved the satisfaction is of next level.
on 26. June 2024, 14:56 by ozgaz
Another beauty - thanks ATK. Hope it truly isn’t the end of days - and that there are many more to come. Great constraint combination.
on 26. June 2024, 00:27 by cam
I don't have a ton of time for puzzles these days so it's really nice when there's a beautiful yet approachable puzzle I can tackle. Thank you!
on 25. June 2024, 23:49 by Silverscree
Truly astonishing that you can have a negative constraint with this puzzle, and that it turned out to be useful in my solve! Lovely work, as usual Abdul :)
--Thank you for the kind comment. On a technical note: in order to have the negative constraint it suffices to give all Daisies. -- I know you know that -- so you see, that aspect is not strictly astonishing (though it surprises me too). :) ---ATK
on 25. June 2024, 22:50 by Abdul the Killer
Thanks for the kind comments everyone, it's nice to know when something lands.
on 25. June 2024, 21:30 by Calvinball
I don't know if you consider your Yin Yangs a series, but I consider them one of my favorite series on this website.
on 25. June 2024, 20:31 by DanishDynamite
Wonderful stuff. More please!
on 25. June 2024, 16:24 by Franjo
Again you made a very nice construction with your special rule set. Thank you very much for sharing. But - please don’t let this puzzle be the last one with the lovely daisies!
on 25. June 2024, 13:29 by Elliott810
Brilliant construction! Thanks:)
