Yin Yang Fillomino with Japanese Sums
(Published on 15. July 2026, 15:45 by isajo4002)
Fillomino (1-9): Divide the grid into orthogonally connected regions that are 1-9 cells in size.
Write in each cell the size of its region.
No two regions of the same size may touch orthogonallly.
Yin Yang: Shade some cells in the grid so that all shaded cells are connected orthogonally, and all unshaded cells are connected orthogonally.
No 2x2 region may be entirely shaded or entirely unshaded.
Japanese Sums: Digits outside the grid give the sum of digits in each run of unshaded cells in its respective row or column in order of appearance.
A ? stands for any non-zero integer.
For each row or column either all clues are given or none are.
SudokuPad
Solution code: The digits in row 5 followed by the shading in column 8 S for Shaded and U for unshaded
Comments
on 1. August 2026, 13:04 by pmays123
Looks intimidating at first but is very smooth and approachable. Thank you!
on 19. July 2026, 17:09 by Piatato
Smooth
on 18. July 2026, 20:08 by VitP
without even starting this puzzle, it should be obvious that it can't be level 2. ANY yy puzzle STARTS at level 2, and even that is unlikely.
include the 2 other variants, each of which adds additional complexity. do the math.
THEN it's a "bobbins" puzzle, which means you can't check something you're unsure of during the solve.
FOR EXPERTS ONLY --> level 3
on 16. July 2026, 17:23 by fitzie
I think this was pretty close to 3, but having the rating at 2, helped me persevere. fun puzzle.
on 16. July 2026, 17:13 by Franjo
Thank you very much for creating and sharing this interesting puzzle. (I don’t like unnecessarily complicated solution codes …)
on 16. July 2026, 11:24 by Playmaker6174
@dmm90: you actually flipped the shading part in the solution code there.
on 15. July 2026, 21:02 by Christounet
Very good fun again!
More fillo puzzles like these please.
Thanks :)
on 15. July 2026, 17:25 by marcmees
All is said. Enjoyable, smooth & fun. :-) Thanks
on 15. July 2026, 16:37 by TVDK
Such an enjoyable puzzle :)
on 15. July 2026, 16:07 by yttrio
Very fun and smooth puzzle!
