Yin-Yang Sudoku
(Published on 12. December 2020, 20:26 by Phistomefel)
About the rules of the Yin-Yang Sudoku:
- The usual Sudoku rules apply.
- Some cells have to be colored grey.
- All grey cells have to be orthogonally connected. All white cells have to be orthogonally connected, as well.
- No 2x2-region may be completely covered by grey cells, or completely covered by white cells.
- The clues outside of the grid indicate the sum of all grey cells in the respective row or column.
Here you find a link to the example.
If you are not yet familiar with the logic of Yin-Yang puzzles, I can recommend athin's lovely puzzle Yin-Yang - All-White as a start.
Now for the puzzle. It is available online via Penpa Plus, as well. Have fun solving!
Solution code: First row and first column
Comments
on 12. September 2022, 23:23 by Christounet
Beautiful set with the yin yang constraint, that is probably more common nowadays than it used to when this was posted, or maybe this was even the first of the kind ? Did not feel too hard but still very enjoyable with great combinations of digits in the later part.
on 30. July 2022, 05:23 by Samish
Needless to say how brilliantly constructed this puzzle is. Interestingly, it felt quite approachable, like 3/5. Maybe we weren't as used as these puzzles combinations back in 2020 as we are now, as trends are moving so fast
on 30. March 2021, 16:27 by Phistomefel
Changed example.
on 1. March 2021, 15:02 by Mody
Wunderschön
on 22. December 2020, 07:43 by Phistomefel
Thanks a lot for solving the puzzle and for your kind words, MagnusJosefsson and DiMono.
on 21. December 2020, 21:28 by DiMono
Another wonderful puzzle. Thanks for creating it.
on 14. December 2020, 01:03 by MagnusJosefsson
Absolutely wonderful! Very enjoyable throughout.
on 13. December 2020, 17:52 by Phistomefel
Thank you very much, Jesper, PixelPlucker and marcmees! I am glad you enjoyed the puzzle although it is not that complex.
on 13. December 2020, 16:01 by marcmees
People who are afraid of Phistomefel's puzzles shouldn't be discouraged. Beautiful but not that hard. Thanks
on 13. December 2020, 15:17 by PixelPlucker
Loved how it all came together!
on 12. December 2020, 21:58 by Jesper
I really loved this combination! I found the Yin-Yang part quite straightforward, but very enjoyable. Finishing up the Sudoku was a bit more tricky but the path was very elegant.
