Give or Take (Yin Yang Killer)
(Published on 11. November 2024, 18:21 by tallcat)
Normal sudoku rules apply
Yin Yang: Divide the entire 9 x 9 grid into shaded and unshaded regions of cells such that each region forms a single orthogonally connected area, and no 2 x 2 area in the grid may be covered by a single region.
Killer: Digits may not repeat in cages. Given values in the top left corner are the sum of unshaded digits minus the sum of shaded digits within the cage.
Can be played online at f-puzzles or Sudokupad
Solution code: Enter (from left to right) row 4 with a hyphen '-' for every border between two different shading regions. For example: 123-45-67-89.
Comments
on 13. November 2024, 01:09 by LeaVulpina
Lovely puzzle! Every time I was stuck, the next step would inevitably be simpler and more elegant than whatever it was I'd been looking for.
on 13. November 2024, 00:09 by kamkam
some parts were very tricky. good puzzle
on 12. November 2024, 20:08 by Chilly
Very nice - smooth apart from one small ramp!
on 12. November 2024, 14:28 by mihel111
This one has a great solving path from start to finish.
Thanks a lot, tallcat.
on 12. November 2024, 04:28 by femto113
Brilliant, never falls apart, challenging right through the end.
on 11. November 2024, 20:58 by Playmaker6174
I'm delighted to hear that one of my favorite projects inspired you to dive into more hybrid stuff x)
Lots of cool and neat deductions in this one! Some parts after the opening took me longer than expected but careful thinking process helped me nicely :)
on 11. November 2024, 20:33 by Jesper
Lovely puzzle, thanks!
on 11. November 2024, 20:05 by yttrio
Very fun puzzle with a good consistent difficulty throughout!
