Tartan
(Published on 15. March 2026, 23:17 by billybeth)
Any three consecutive cells on an orange line must contain one low digit, one medium digit and one high digit.
Any three consecutive cells on a teal line must contain one digit from all three of these sets {1, 4, 7}, {2, 5, 8}, and {3, 6, 9}
Numbers separated by a black dot are in the ratio 2:1. All black dots are given.
Cells a chess knight's move apart may not contain the same digit
Digit in cell with grey circle is odd.
Solve online:Sudokupad
Solution code: top row
Comments
on 10. April 2026, 19:23 by firespire
Thanks to comments highlighting the rules I found it plain sailing.
on 26. March 2026, 18:51 by JRaunak
What a great puzzle, things kept floooowing smoothly ... until I hit the roadblock obv.
on 17. March 2026, 03:11 by SanFranSam
When is a colouring puzzle not a colouring puzzle? ;)
But seriously it took reading @anthe95 comment to finally finish. So easy to skim over rules that normally apply the other way.
on 16. March 2026, 14:25 by anthe95
took me until the last couple digits to notice the "all black dots are given" but that's totally on me :P
it's quite an achievement that the puzzle still had a nice flow, even while not being aware of all the rules. well done!
on 16. March 2026, 14:19 by Rollo
Sehr hübsch :-)
on 16. March 2026, 01:26 by macintux
I enjoyed that quite a bit. My only complaint, and I don’t think there’s a good solution for this, is that the lines made everything very cluttered. It was even difficult to quickly assess which box a cell was in.
Maybe thicker box borders if that’s possible when laying out a puzzle? Doesn’t solve the clutter problem.
