Solution code: Column 2.
today, 01:50 by Stabbers
nod to the Mod Squad
yesterday, 13:54 by anothermember
The opposite to most comments so far, I forgot the Dutch Whisper rule and interestingly it *almost* solves without it and was quite fun - I got all the colouring, placed all but two of 5 7 9s, and ended up only with unsolvable pairs of 36s, 14s, and 28s.
yesterday, 11:00 by firespire
Entertaining and very doable.
yesterday, 03:56 by dgleason
Very approachable and very fun. Always enjoy a reason to color!
yesterday, 00:21 by Snaques
Yeah, didn't get the negative constraint either. Otherwise pretty fun but quite easy.
on 5. September 2026, 19:42 by BKKGarrett
I didn't use the rule "EXCEPT CELLS ON THE RED LINE, ALL POSSIBLE ORTHOGONAL MOD 3 LINES ARE SHOWN" at all. Was it necessary to solve the puzzle?
on 5. September 2026, 18:21 by thegreatgazoo
IDK if I made a mistake but I forgot all about the negative constraint and it solved smoothly.
on 5. September 2026, 12:39 by Surgur
I initially misunderstood the negative constraint and thought that unless both cells were on the red line, all mod3 lines were shown. So I thought I had broken the puzzle for a bit, but when I read the rules more carefully it was a nice and easy solve :)
on 5. September 2026, 11:17 by JVA
Actually an easy puzzle once you realise these mod lines are the opposite of regular mod lines XD
on 5. September 2026, 08:43 by Mozart40
I had to learn the hard way that you have to read the rules (especially the MOD ones) properly. After that, it was actually very easy and relaxing.
on 5. September 2026, 08:29 by highonlife
Easy and Approachable. Fun overall
on 5. September 2026, 00:51 by macintux
Coloring & negative constraints? Sign me up.
Terrific puzzle. I was scratching my head quite a while before I finally remembered the red line meant something beyond “you can’t see teal lines here”, after which it was quick to finish.
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