Yin Equals Yang
(Published on 9. September 2022, 07:16 by SSG)
This puzzle is strongly inspired by Agent's implementation of Yin Yang rules into sudoku in Antithesis.
Normal sudoku rules apply.
Yin Yang: Shade some cells in the grid such that all shaded cell form an orthogonally connected region, all unshaded cells form an orthogonally connected region, and no 2x2 region is entire shaded or unshaded.
Region Sum Lines: Along a blue line digits must have the same sum in each 3x3 box the line passes through. Digits in shaded cells must be treated as negative; but, no line may sum to a negative number.
f-puzzles: https://f-puzzles.com/?id=2mg25tw4
CTC: https://tinyurl.com/54tumd74
Solution code: Digits in shaded cells in row 7 followed by digits in shaded cells in column 8.
Comments
on 1. November 2022, 17:50 by RubberMittens
Great puzzle. Got super stuck halfway through but toughed it out.
on 17. September 2022, 01:06 by wenchang
Very Nice! Spoiler alert!
https://youtu.be/fh8BoO-7ftY
-Thank you so much for featuring this puzzle! And, very nicely done. -SSG
on 13. September 2022, 16:39 by cdwg2000
Very nice!
on 10. September 2022, 20:37 by Snookerfan
Great puzzle! Very hard with a lot of interesting deductions. Thank you!
on 10. September 2022, 17:22 by MagnusJosefsson
Great puzzle, thanks!
on 10. September 2022, 02:20 by thoughtbyte
Awesome puzzle, I found it quite difficult but fair. Very nice, thanks @SSG!
on 10. September 2022, 00:31 by polar
Great puzzle with some lovely mid-solve deductions - thanks :)
on 9. September 2022, 13:13 by Agent
Very cool implementation of negative digits with some rich deductions. Thanks for sharing!
on 9. September 2022, 10:19 by Jesper
Very nice, thanks. Hard but with some beautiful deductions.
