Roman Whisper Yin Yang
(Published on 5. September 2026, 01:00 by yttrio)
Rules:
Normal Sudoku rules apply.
Yin Yang: Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 area is fully shaded or fully unshaded.
The shaded region acts as a German Whispers line: if two orthogonally connected cells are both shaded, then the digits in those cells must have a difference of at least 5.
XV: Digits separated by an X must sum to 10. Digits separated by a V must sum to 5. Not all possible Xs and Vs are necessarily given.
For each X and V, one the digits touching the X or V is shaded, while the other is unshaded.
6x6 Example:
The image below shows a sample 6x6 puzzle and solution with the same rule set.
Note: For 6x6 Sudoku, adjacent digits on a German Whispers line must have a difference of at least 3 (instead of the usual 5)
Play the example 6x6 in SudokuPad.
Solution code: Digits in shaded cells in row 2 (left to right) followed by digits in shaded cells in row 8 (left to right)
Comments
today, 22:21 by Nemefish
one of those puzzles that made me feel smarter after I finished it and that gradually unraveled without ever coming to a complete halt.
today, 15:15 by wuc
Very smooth yy puzzle. Great setting thx.
today, 07:09 by Elker
Another brilliant yy puzzle. Very fun. Thanks for setting.
yesterday, 23:55 by KeenanN
This was such a blast to solve! Thank you for giving us this puzzle, yttrio. I have really improved my Yin Yang skills based on your puzzles.
yesterday, 19:32 by vukkarak
Once you find the right logic it is marvelous!
yesterday, 07:34 by nordloc
Beautiful
yesterday, 05:20 by The Pi Guy
Lovely puzzle. Really smooth solve path. ❤️
on 5. September 2026, 15:01 by emoney1374
Great puzzle!!
on 5. September 2026, 13:05 by Franjo
Thank you very much for creating and sharing another fantastic YY-hybrid. Incredible good setting!
on 5. September 2026, 11:36 by anothermember
Clever break-in, then very smooth. Love a good yy puzzle.
on 5. September 2026, 11:12 by Snookerfan
Very nice! Once I realized that I was not building a loop (memo to self: read the rules), it was a smooth and very enjoyable experience. Thanks
on 5. September 2026, 09:57 by wuc
Very smooth yy puzzle. Great setting thx.
on 5. September 2026, 09:46 by Lithium-Ion
Absolutely amazing puzzle. I enjoyed every second. Well done!
on 5. September 2026, 08:00 by Piatato
Smooth and fun, thanks!
on 5. September 2026, 07:25 by Saltensity
Amazing puzzle, once you spot it, it starts to flow smoothly. Thank you for sharing :)
on 5. September 2026, 06:03 by dleclair
Really nice puzzle, I enjoyed the solve! Fairly smooth for me after I got it started a bit.
on 5. September 2026, 05:25 by mihel111
Once more a great puzzle.
Very well done.
on 5. September 2026, 01:52 by lootyloot
really fun and quite approachable if you know the tricks
