Colorado X
(Published on 19. February 2024, 20:24 by Florian Wortmann)
Normal sudoku rules apply.
Digits may not repeat on the marked diagonals.
Antiknight
Identical digits cannot be a knight's move apart.
XV Pairs
Digits joined by an X sum to 10. Digits joined by a V sum to 5. Not all Xs and Vs are given.
Ratio Pair
Digits joined by the black dot are in a 1:2 ratio. Not all dots are given.
Odd
The cell with the gray circle contains an odd digit.
Link:
SudokuPad
Solution code: column 1
Comments
on 5. August 2025, 04:06 by PancakePie
Very fun! 3* difficulty for me, but a joy all the way through!
on 27. April 2025, 01:40 by Harrowhark
I think the difficulty of this puzzle is very subjective. I was surprised some of the comments suggested the real difficulty was 3-4 stars, when for me it was 1. Then again, I love XV and coloring puzzles so I suppose it comes down to your personal predilections. I breezed through it with just coloring and only filled in the numbers at the very end. I don't think this was the intended strategy but even though I could have started filling in the numbers before, I was having so much fun with coloring I just didn't see the point. Nevertheless, it was very enjoyable and I had a blast coloring!
on 8. April 2024, 22:00 by chain.reader
beautyful setup, thanks.
on 26. February 2024, 16:17 by wuc
I go with 3 to 4 stars too. Hard to start. Nontheless very enjoyable. Great logic. I love coloring. Thx.
on 24. February 2024, 23:58 by NordenShield
Beautiful solve. Got stuck, but learned much from having to reconsider steps.
on 23. February 2024, 14:31 by Florian Wortmann
Since there are some comments regarding the difficulty and not finding the intended path, I will link a solution document in a hidden comment once I´m back from vacation (Feb 29th the earliest).
--
Edit:
Well, Sudoku Sleuth featured the puzzle on his YT channel. Watch the video here: https://youtu.be/uJP2PIV6y14?si=9WxLbxzRDfsvhuTo
on 21. February 2024, 18:27 by Orpheus
This was a beautiful puzzle. And, despite the sparse grid, I found it intuitive to solve. That said, it really stretched me. This was a very enjoyable solve.
on 21. February 2024, 16:48 by Virux
Very nice puzzle. Definitely more difficult than the 2-star rating.
I'd say 3-4 stars in difficulty.
on 20. February 2024, 23:28 by Silverscree
I have thoroughly enjoyed the Colorado series, and I think I must have missed something here because I found that puzzle at least 4 stars difficult. I think I might revisit it later to see if I can spot something simpler with fresh eyes. An incredible sparse grid this time!
Edit: Ahhh, the hidden comments. I saw my error immediately. A must faster solve coming right up.
on 20. February 2024, 20:46 by Florian Wortmann
Thanks everyone for solving and the kind comments :-)
on 20. February 2024, 20:02 by davidjshort
Great Puzzle. I enjoyed the back and forth between determining the colours and determining the numbers those colours represent.
on 20. February 2024, 19:31 by DanST
It's been a while since I enjoyed colouring my sudoku willingly. Beautiful puzzle
on 20. February 2024, 19:02 by yttrio
Very fun coloring puzzle!
on 20. February 2024, 18:52 by Big Tiger
Well, I couldn't find the logic, apparently. I did a bunch of coloring as a strategy, seemed to be going well, then hit a dead end. Took a guess with one cell that had two options and happened to get the right one.
on 20. February 2024, 18:30 by Perladel
I loved the opening!
on 20. February 2024, 14:39 by GeorgeTheToad2
Lovely puzzle. Thank you.
on 20. February 2024, 03:57 by haligonian
I absolutely loved this puzzle from start to finish!
on 19. February 2024, 22:40 by Puzzle Weasel
Great puzzle, thanks!
