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.
Lösungscode: Digits in shaded cells in row 7 followed by digits in shaded cells in column 8.
am 1. November 2022, 17:50 Uhr von RubberMittens
Great puzzle. Got super stuck halfway through but toughed it out.
am 17. September 2022, 01:06 Uhr von wenchang
Very Nice! Spoiler alert!
-Thank you so much for featuring this puzzle! And, very nicely done. -SSG
am 13. September 2022, 16:39 Uhr von cdwg2000
am 10. September 2022, 20:37 Uhr von Snookerfan
Great puzzle! Very hard with a lot of interesting deductions. Thank you!
am 10. September 2022, 17:22 Uhr von MagnusJosefsson
Great puzzle, thanks!
am 10. September 2022, 02:20 Uhr von thoughtbyte
Awesome puzzle, I found it quite difficult but fair. Very nice, thanks @SSG!
am 10. September 2022, 00:31 Uhr von polar
Great puzzle with some lovely mid-solve deductions - thanks :)
am 9. September 2022, 13:13 Uhr von Agent
Very cool implementation of negative digits with some rich deductions. Thanks for sharing!
am 9. September 2022, 10:19 Uhr von Jesper
Very nice, thanks. Hard but with some beautiful deductions.