Normal sudoku rules apply.
Adjacent digits along a line differ by 4 or 5.
Solve in SudokuPad
Solution code: Row 1
on 15. October 2026, 10:13 by Kitty Trouble
Agreed that I personally think it's 3 star difficulty. Great puzzle
on 11. October 2026, 00:04 by gadgetgreen
Just great! I disagree with the current rating and difficulty: this is a 3 star beauty!
on 10. October 2026, 08:42 by YrBodyIsNothing
Really cool puzzle, didn't expect it to unwind the way it did :)
on 18. September 2026, 03:08 by palletpusher
Beautiful puzzle; took me quite a while to break into but very enjoyable constraint
on 29. August 2026, 21:20 by Exigus
Lovely coloring (or labelling) puzzle, and aptly named. Thanks!
on 29. August 2026, 15:33 by GeorgeTheToad2
Superb fun, I decided to use letters rather than colours which helped. Lots of lovely interactions between the lines.
on 28. August 2026, 23:15 by Qodec
Very enjoyable!
on 28. August 2026, 22:38 by Onyx
Difficult break-in, took me a while to increase constraints, very interesting rule nonetheless!
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