Definitions:
German whisper line: neighbouring digits differ by at least 5
Renban line: contains a set of nonrepeating consecutive digits in any order
Ten line: line can be broken into one or more non-overlapping contiguous groups of digits that sum to ten
Region sum line: box borders divide the line in segments. The sum of the digits in a segment is the same for all segments
The earlier published version of this puzzle contained an annoying error. Huge thanks to Piff for spotting and reporting the error!
The puzzle below is the corrected version. It is very similar in concept to the original puzzle, the alterations make it quite a bit more approachable in my opinion. My apologies to all solvers for the earlier error.
Solution code: The digits of row 2
on 1. May 2025, 19:00 by QuiltyAsCharged
This was excellent and fun to solve! The "All V's are given" rule is essential and leads to some of the most interesting logic in the puzzle.
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Thank you for the kind words :) I also really like the logic following from negative constrains on V's and X's, both in solving and in setting!
on 27. April 2025, 16:07 by MissyHendo
Thx. A very enjoyable sudoku, in hindsight I should have used the letters to denote each line once found to make it a faster solve so that's something I learnt :)
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Thank you for solving and commenting, I am glad to hear you enjoyed it and learned something you can use in future puzzles!
on 15. March 2025, 07:29 by faisalaak
did not need the (All the V's are given) rule. the line on box 1 was tricky it makes it almost a 4 star difficulty
on 12. March 2025, 19:40 by Adrian71
Corrected error in the puzzle
on 12. March 2025, 05:15 by Elliott810
Beautiful puzzle! For me at least 4* difficulty. Thank you:)
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Thank you for the solve :) I always find it hard to estimate the difficulty of a puzzle, thanks for the feedback!
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