Modularrows
(Published on 10. April 2026, 06:43 by juggler)
Normal Sudoku rules apply.
MODULAR ARROWS - A digit on an arrow counts how many cells in the indicated direction have the same remainder mod-3 as itself, including itself.
Solution code: Row 1
Comments
on 14. April 2026, 10:47 by bboom
What a cool series, so many possibilities with just some arrows. Now I wonder if it is possible to have two puzzles with the exact same arrows, but different arrow rules, each with a different unique solution...
I did set one puzzle like this as well last year, maybe you'll enjoy it too since you're making all these: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000NOV
on 12. April 2026, 01:46 by CitrusGremlin
Really enjoyed this one. The arrows bent my mind into interesting new shapes. Keep them coming! Maybe index arrows? Nah, that'd just be the same as a straight line coming from the arrows point.
on 10. April 2026, 19:41 by zeniko
Had to restart twice, as I kept messing up the ternary condition of what the arrows are (not) counting, Nice interactions, though. Thanks for sharing.
on 10. April 2026, 16:58 by miranda_9
What a beautiful puzzle! And yes @ keesh nice deductions. Thanks for sharing.
on 10. April 2026, 16:54 by keesh
This puzzle reminded me of that meme of the missile that knows where it is by knowing where it is not. I constantly had to subtract what i did know from what i did not know and arriving at a point that i did not know but now knew.
And suddenly the puzzle was solved.
on 10. April 2026, 14:11 by Franjo
Thank you very much for creating and sharing another fantastic CA-puzzle. Love this series!
on 10. April 2026, 14:06 by luna_vale
Nice puzzle!
