Yin Yang Position Sums Sudoku
(Published on 3. November 2022, 19:17 by Jesper)
Rules
Fill the grid with digits 1 to 9 so that each row, column and 3x3 box contains each digit exactly once.
Also, shade some cells, so that all shaded cells are connected, all unshaded cells are connected, and no 2x2 area is either fully shaded or fully unshaded.
Let A and B be the digits in the first and second cells of the grid from any direction. An outside clue adjacent to the grid indicates the sum of A and B. An outside clue in the blue outer area indicates the sum of the digits in positions A and B within the grid, from the direction of the clue.
However, digits in shaded cells are treated as negative for all sums.
Example (6x6):
Penpa+: Example puzzle (6x6)
The puzzle follows:
Penpa+: Yin Yang Position Sums Sudoku
The solution check requires all digits and shading.
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Solution code: row 9 followed by column 9
Comments
on 21. March 2023, 20:17 by glum_hippo
A deliciously crafted 4-star puzzle. Thank you
on 10. January 2023, 17:28 by madhupt
What a beautiful puzzle! Jesper just does not cease to amaze. Thanks for sharing.
on 21. November 2022, 21:53 by elpadrinoIV
Beautiful and approachable!
on 18. November 2022, 20:52 by udukos
Amazing puzzle, Jesper! I enjoyed that one a lot. Thanks! :)
on 14. November 2022, 23:37 by Christounet
Wow, that was another great combination with yin yang !
Surprisingly easier than expected (if you’re already familiar with yin yang and position sums implications)
Loved the logic of the 2s in here ! Thanks !
on 5. November 2022, 15:24 by henrypijames
First time a puzzle collective rated 4 difficulty being only 2 for me.
on 4. November 2022, 12:21 by Franjo
Fan-tas-tic! I would give more than 100% - if I could. Thank you very much for setting this beautiful puzzle.
on 4. November 2022, 06:34 by marcmees
super smooth solve. (On the easier side for a Jesper puzzle :-)). Beautiful entry. Thanks.
on 4. November 2022, 04:50 by Agent
Very clever and fun hybrid puzzle! Incredibly smooth.
on 4. November 2022, 02:27 by Piatato
So smooth and nice! Thanks!
on 4. November 2022, 00:34 by thoughtbyte
Fantastic! It was as fun and elegant as usual but a bit more approachable than most of your puzzles. Very enjoyable, thanks Jesper!
on 3. November 2022, 21:24 by ONeill
Fantastic idea and execution! Thanks :)
on 3. November 2022, 20:36 by Niverio
Awesome mix of approachability and enjoyability. Fantastic!
on 3. November 2022, 20:17 by KNT
Very straightforward and smooth, yet an awesome original opening sequence. thanks :)
on 3. November 2022, 20:13 by polar
A great idea, executed wonderfully. Quite straightforward compared to some of your other puzzles, but no less enjoyable. Thanks Jesper :)
on 3. November 2022, 20:03 by Steven R
Solves beautifully, had a lot of fun. Thanks!
