Colours in the (k)night XII
(Published on 14. September 2025, 16:57 by Villse)
The “Colours in the (k)night” series continues. I hope you enjoy it.
Here are the links to the previous parts of the series:
Irregular Sudoku rules apply. Place the digits 1–9 once in every row, column, and marked region.
Anti-Knight: Cells separated by a knight’s move in chess cannot contain the same digit.
Kropki dots: Cells separated by a white dot are consecutive. All possible dots are given.
Little killer: Digits along marked diagonals sum to the number indicated outside the grid.
Solve online:Sudokupad
Happy solving!
Solution code: Row 6 (9 digits)
Comments
on 2. October 2025, 17:54 by snuuba
After several hours and numerous restarts I finally cracked it. Probably one of the hardest puzzles l’ve ever solved, but also one of the most satisfying, many thanks!!!
on 30. September 2025, 17:20 by Bankey
Tough but great fun. Thanks, @ Villse :).
on 23. September 2025, 19:33 by illandres
Many thanks to the commenters who ignored the "all white dots are given" because their comments helped me realize that I had ALSO overlooked it!
on 22. September 2025, 20:53 by LeaVulpina
When I saw the grid, I thought this was gonna be hard as hell, but honestly, I found this easier than I find most irregular-region puzzles. Definitely calls for using the letter tool imo. A beaut of a puzzle!
on 21. September 2025, 04:31 by alisonsky2
Very fun! I found it helpful to draw thicker region lines with the pen tool and turn on the dashed grid.
on 20. September 2025, 18:41 by bcreturnee
I've spent the past 5 days on this. I spent over 600 minutes on the first try. Learned a lot. 2nd and 3rd try learned some more. Then I re-read the rules.. SLOWLY.. WOW! (Shout out LordBidoof) What an awesome puzzle Villse!
on 19. September 2025, 06:47 by LordBidoof
I spent so much time on this puzzle without noticing that ALL dots are given
on 17. September 2025, 02:22 by zhall12570
The very hardest of the series by a mile. Closer to 4 stars.
on 16. September 2025, 09:58 by zhall12570
The very hardest of the series by a mile. Closer to 4 stars.
on 15. September 2025, 15:44 by Snookerfan
Beautiful puzzle! Really interesting how the negative constraint forces a lot of the coloring. Thank you
on 15. September 2025, 08:59 by Tacocat
Very nice coloring puzzle, thank you!
The constraints work nicely together. Getting started is tricky, there are probably several possible choices. Puzzles with non linear solution paths are always interesting.
Maybe my solve was not the most efficient, but I would definitely rate it above 2 stars (3 or 4).
Only complaint is that irregular regions become hard to see with full coloring, thicker lines would have been better (I don't know if that's possible).
on 14. September 2025, 20:20 by VitP
not even remotely level 2.
there is literally NOTHING to "bite on"
