Standard kropki pairs rules apply.
Standard XV pairs rules apply.
Standard German Whispers rules apply.
Cells with a grey circle contain an odd digit.
There are NO negative constraints.
You can try Ungerade on f-puzzles.
... or, if you prefer, on the CTC App with answer check.
For those so inclined, r1c1 might make a good bet cell. :)
Solution code: Column 1
on 4. July 2023, 18:08 by 99%Sneaky
Very fun, had to use two different coloring schemes to make it through :)
on 9. May 2023, 17:16 by ViKingPrime
The logic is more intricate than you would guess at first blush. Fun puzzle!
on 9. May 2023, 14:15 by VitP
A bread and butter puzzle for intermediate solvers.
on 9. May 2023, 10:32 by kuraban
corrected ctc link
on 9. May 2023, 08:53 by 28righthand
FYI, the tinyURL CTC link seems to point to f-puzzles.
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Thanks for letting me know. Fixed now.