Outside Yin Yang
(Published on 1. October 2025, 14:51 by Schachus)
Online solving link: Penpa Link
For answer check in Penpa, please mark the cells belonging to the part corresponding to the 6 clue in column 3 in dark grey.
Solution code: row 2 then column 8, lengths of contiguous blocks of cells belonging to the same part (unknown number of digits, sum 17(=9+8))
Comments
on 4. October 2025, 14:47 by Schachus
Well, these ratings are always subjective. It could definitely be 3 stars once the dust settles, lets see how the solvers rate it, once there are 10 of them.
As for "what is there to bite on", I admit that there is not too much, but doesnt that also help finding the starting point?
I'm probably not telling a big secret when I say you should look somewhere in the area, where the horizontal and vertical clues meet :D
on 3. October 2025, 20:45 by VitP
level 2 ?
yy STARTS at level 2, and this one looks to be much harder than the basic one.
a good question to ask is "what is there to bite on", and here, the answer is "nothing (except maybe for experts)"
on 2. October 2025, 08:57 by Schachus
yeah, there could be multiple 2-cell stretches in row 3.
Of course it is always possible that I made a mistake, but I do believe the solution to be unique. Have you checked the 2 clue in row 5? There is a wrong solution that would satisfy everything but the 2 in row 5 in the end.
on 2. October 2025, 07:46 by SudokuFan
There absolutely could be two 2-cell stretches in row 3
on 1. October 2025, 19:21 by MaizeGator
I tried this puzzle but think its non-unique at the end, unless I misunderstood the rules. Is an outside clue saying there is only ONE instance of that length in the row/column? Or (for example) could there be two 2-cell stretches in R3?
