Solution code: Row 5 from left to right (9 digits).
on 15. January 2025, 23:58 by Joanie
I agree with others. I did not use the negative constraint. Found this to be 1*. Loved the coloring :)
on 15. January 2025, 23:16 by nunc
I love coloring puzzles. And even without using the negative constraint, it's quite easy. Thanks for sharing!
on 15. January 2025, 22:07 by apendleton
I've been doing a bunch of the NurglesGift XV puzzles lately, which mostly require using the negative constraint, so I kept spotting opportunities and then deliberately not using them because your extra challenge, which felt like such a tease. Great fun, though! I'd still put it at 1-1.5* personally?
on 15. January 2025, 15:46 by thoughtbyte
Very nice. I'd put it around 2.5/3 without using the negative constraint, and very fun. Thanks.
on 14. January 2025, 19:53 by keenbowl
Very nice snack, thanks for setting&sharing!
MSDOS: Thanks keenbowl!
on 14. January 2025, 19:21 by Marshal on Mars
Even without applying the negative constraint, it's a very light puzzle. (As I thought about it after finishing, I think looking to apply the negative constraint might have even required more scanning than just doing it without.)
Nice little break-time puzzle.
MSDOS: Thanks for the solve and the feedback! I may rank the estimate down to a 1-star difficulty if others echo this.