X-triplets
(Published on 1. June 2025, 09:13 by Adrian71)
- Normal Sudoku rules apply
- X-triplets are formed by 3 digits on a straight line that sum to 10. Digits may repeat on an X triplet, if allowed by Sudoku
- The grey lines form X-triplets
- All X-triplets are given
NB this puzzle replaces an earlier version which contained an unfortunate error. Sincere apologies to those who spend their time on the erroneous puzzle, and huge thanks to the users who pointed out the error!
Solution code: The digits of row 8
Comments
on 13. August 2025, 16:52 by Bankey
A bit tedious, but fun. Thanks, @ Adrian71 :).
on 2. June 2025, 20:46 by Krokant
That was delightful. The negative constraint is quite a challenging addition to the ten-lines. :)
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Great to hear that you liked the puzzle! Thanks for solving and commenting/ Maybe I will do another puzzle with a slight variation on the theme. we will see!
on 2. June 2025, 18:36 by Franjo
Interesting Ten-line puzzle! Tricky to use the negative constraint here. It’s so easy to overlook a possible X-triplet. Thank you very much for creating and sharing.
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Thanks for the solve and the feedback! I agree with you on the ease of overlooking one :)
on 1. June 2025, 20:39 by Visumation
Really liked that. A lot of scanning necessary at the end though. Thanks for sharing.
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Thanks Visumation, I am glad that you liked it!
on 1. June 2025, 15:58 by Snookerfan
Fun puzzle! I thought at first why rename the tenline, but then I saw the negative constraint and it all made sense. Scanning was tough. Thank you
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Thanks for the solve and the feedback Snookerfan! Hapy to hear that you enjoyed
on 1. June 2025, 15:12 by HydTheHydre
Definitively much better this time!
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Thank you HydTheHydre for solving the puzzle again, and for kindly pointing out the earlier flaw!
on 1. June 2025, 14:45 by Morisenseiisgod
I really struggled with the scanning, but that may be a me problem and not reflection of the quality of the puzzle. Thanks for setting!
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THanks for solving and commenting! I myself found out how easy it is to miss a triplet, so I understand your struggle :)
on 1. June 2025, 14:15 by Piff
Although it's hard to scan sometimes, i love this type of negatif constraint, great puzzle
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THank you for the nice words, I am really glad you enjoyed the puzzle! I agree about the constraint, I like them a lot too
on 1. June 2025, 11:58 by BevG
Thank you for re-doing this puzzle, it solved much more smoothly this time
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Thank you very much for again taking the time of solving the puzzle and commenting, both comments are highly appreciated!
