Colorado 15
(Published on 24. August 2025, 14:20 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.
Lockout Lines
Digits on the blue line cannot be between the digits in the two corresponding endpoint diamonds. Digits in endpoint diamonds must differ by at least 4.
Link:
SudokuPad
Solution code: row 9
Comments
on 25. August 2025, 21:55 by BG03
Thank you for a wonderful puzzle. As commented earlier, the lockout line was a great unlock. It felt like playing a long game of chess and forcing checkmate with the last few moves!
on 25. August 2025, 18:17 by Florian Wortmann
Thanks everyone! Glad you liked the puzzle :-)
on 25. August 2025, 17:09 by PinkNickels
Another banger!
on 25. August 2025, 13:18 by Franjo
Yeah, that the little line would do the work in the end was expected, but until it did so I couldn’t imagine how… Great setting! Thank you very much for creating and sharing this brilliant puzzle.
on 25. August 2025, 02:38 by NorthCoastAsher
Very well constructed and satisfying ending!
on 25. August 2025, 01:17 by chubnatty
Such a satisfying ending. Thanks for a great puzzle!
on 24. August 2025, 21:40 by Snaques
This was very fun. I just wish I had a more effective way to "color" each cell with all the restrictions it has.
on 24. August 2025, 17:18 by AnebodaSlatorp
Thank you! Another lovely Colorado
