Colorado 17
(Published on 26. May 2026, 19:17 by Florian Wortmann)
Normal sudoku rules apply.
XV
Digits joined by an X sum to 10. Digits joined by a V sum to 5. All possible Xs and Vs are given.
Perfect Square
The two-digit number in the cage (read from left to right) is a perfect square.
Link:
SudokuPad
Solution code: row 6
Comments
on 14. July 2026, 16:55 by ninjcats
been loving this series. beautiful work
on 6. July 2026, 10:14 by snuuba
Somehow missed a new edition to my fav series. Probably could have solved it slightly faster, but I opted to take my time to fully color the grid and fully enjoy this delicacy.
on 27. June 2026, 15:19 by yusuf17
@Reina
Better use letters A-D and F-I
because of their positions in the alphabet (1-4+6-9) and the rule A+D=5, B+C=5, A+I=10 and so on.
on 23. June 2026, 00:45 by Reina
Very hard for me to colour lows/highs AND 1469/2378 AND distinguish between them too. i ended up using letters A-H and a five and having mental notes what goes with what. Im sure theres better option i just havent found one. I ended up giving up after 50min after i messed up who-knows-where and restarting it. Then finish ind start to finish in 15min, haha. Both CRAZY hard for finding the right method and quite easy for the solve itself it seems. Loved every frustration along the way, 5 stars from me (rating, not difficulty, obviously). Thank you for that journey
--
Thanks for persevering! And welcome to colorful Colorado :-)
on 11. June 2026, 19:30 by itsid
Absolutely wonderful puzzle.
silky smooth,
colouring went as if on tracks, one's nicely guided through the solve it seems.
And at the end the perfect square disambiguates the numbers.
A very relaxing ride, thanks a ton!
on 2. June 2026, 18:08 by McParland57
Another lovely puzzle. Thanks Florian.
on 28. May 2026, 00:16 by Capslocker
I was unfamiliar with coloring in a way that doesn't just only split high and low, but also the different highs and lows. So this puzzle was a nice and smooth way to teach myself
on 27. May 2026, 22:41 by AnebodaSlatorp
Smooth!
on 27. May 2026, 21:30 by kisukeA
Awesome, really enjoyed it
on 27. May 2026, 20:57 by Exigus
Beautiful, thanks!
on 27. May 2026, 19:36 by hundertzwoelf
Fantastic coloring puzzle!
on 27. May 2026, 09:42 by Wuschel
Very nice, thank you!
on 27. May 2026, 00:59 by fractalminding
Cool sudoku. ♥️
on 26. May 2026, 22:19 by jeffrey.l.byrd19
Any puzzle that I can fully color before putting any digits in is my new favorite. Thanks!
on 26. May 2026, 22:14 by Mozart40
A lot of colouring fun. I like XV/allcluesgiven Puzzles.
on 26. May 2026, 21:25 by wuc
Vintage to me. Started with these puzzles. Great setting again. The perfect square idea is awesome thx.
on 26. May 2026, 20:57 by sealsinthesoup
This was great! A lot of creative puzzles will have a big build-up to a satisfying breakthrough. As enjoyable as that is, it's refreshing to have something where there's slow consistent progress with new creative logical steps every time you stop to think. This is the first sudoku I've done where the pacing felt this perfect!
on 26. May 2026, 19:58 by PinkNickels
Awesome! So glad to see this series back!
