Sudoku Variants Series (442) - Modular Lines
(Published on 19. September 2025, 06:00 by Richard)
I will see how long it takes before I am running out of ideas.
Modular Lines
Inspiration for this type comes from FullDeck-Missing.
Solve online in Sudokupad.
Apply classic sudoku rules.
Any set of three sequential cells along a modular line must contain a digit from each of the three sets {1,4,7}, {2,5,8} and {3,6,9}, which are residues modulo 3.
Digits may be repeated on lines.
Solution code: Column 1
Comments
on 15. October 2025, 13:14 by AstralSky
The logic is so delicate and nicely associated, Incredible puzzle!
on 12. October 2025, 09:07 by Richard
@Realshaggy: you are absolutely right. The only reason that I included this one in SVS too is that both rulesets are vivid in the portal and seem to exist peaceful next to each other.
The construction process was exactly the same for both puzzles, and so will be the solving process.
on 6. October 2025, 16:00 by Realshaggy
I don't see how this is any different than Entropic Lines (SVS420). In my opinion, the difference is much smaller than between Thermo and Greater Than for example.
on 25. September 2025, 20:39 by dzamie
Huh, I'm kinda surprised you haven't done modular lines yet. Very tricky, had to get real creative with my coloring.
on 20. September 2025, 09:56 by Richard
Added sudoku tag. :)
on 20. September 2025, 07:57 by Piatato
Btw, it also seems like you forgot to tag this as a sudoku, so it's now placed in the no sudokus list. I hope you had a lovely holiday! :)
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Thanks! I added it now, albeit not an icon, but only text.
Yeah, I had a good holiday. A bit rainy now and then...
on 19. September 2025, 18:45 by Franjo
Nice coloring exercise! Smooth path, so I gave 2*. Thank you very much for creating and sharing another lovely SVS-episode.
on 19. September 2025, 13:16 by marcmees
nice one, forced me into coloring the grid. Thanks
on 19. September 2025, 12:44 by Richard
There was indeed a typo in the solution code. I must have been in a hurry uploading this one just before I went on holiday two weeks ago. Sorry for that.
Now it should work fine, so everyone who solved it already can now enter the code. :)
on 19. September 2025, 12:39 by Richard
Changed typo in the solution code.
Apologies!
on 19. September 2025, 08:55 by Exigus
Excellent modular line puzzle. Thanks!
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Reply: thanks for your kind words (and not only this time...)
You can now enter the solution code.
on 19. September 2025, 07:10 by rcg
Greg, I suspect you are right. I just had contact with Richard. He is unavailable right now, but will look at it this afternoon. Sorry for the inconvenience.
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Reply: thanks for the notification!
on 19. September 2025, 06:42 by Greg
Solution code not working?
Fun but challenging, very much hoping I haven't made an error somewhere :)
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Reply: Indeed I made a typo in the solution code. Should work now...
