The Composite Thread
(Published on 6. April 2025, 20:08 by palpot)
This puzzle was created for Scojo's weekly setting prompt featuring 'Region Sum Lines', and 'Renbans'.
I hope you enjoy solving it!
Rules:
Normal sudoku rules: Place the digits 1 to 9 in each Row, Column, and 3X3 box.
Region Sum Line: Digits along the blue line sum to the same total in each 3x3 box the line passes through.
Meta Renban: The digits along each line must sum to a unique number, and the sums of these lines must form a set of consecutive numbers.
Solve online: SudokuPad
Solution code: Row 3 digits from left to right.
Comments
on 4. June 2025, 02:40 by OldManJoe9
In case anyone struggles with the final rule, it is talking about the sum of the entire blue line, not just the segments split by the 3x3 boxes
So if the top line had a region sum of 20, then the entire line would sum to 60, so the top line would be 60 in the consecutive set for the Meta Renban
I stared at this puzzle for 3 hours over 3 days before I learned that it wasn't about region sums that were consecutive but the entire line sums
on 28. May 2025, 06:52 by killer_rectangle
I made the same mistake that wuc did. I spent hours trying to break this puzzle in using the misread rule. Once I realized the correct rule, this puzzle got way easier.
on 28. May 2025, 00:24 by wuc
Awesome. Misread the rules first that each line's segment sums must be consecutive (maybe an idea for a future puzzle). Then I realized the mistake and what a wonderful smooth puzzle. Thx.
on 27. May 2025, 19:46 by glum_hippo
An idea that simply had to exist.
on 27. May 2025, 00:46 by marty_sears
beautiful puzzle... this ruleset really appealed to me and made me want to solve it. And doing so was a very fun experience
on 17. May 2025, 04:50 by Scojo
This was great! A really cool take on the RSL Renban prompt; the meta renban rule works so nicely in this!
on 17. May 2025, 04:48 by Scojo
This was great! A really cool take on the RSL Renban prompt; the meta renban rule works so nicely in this!
on 11. May 2025, 21:07 by sujoyku
Fabulous puzzle! Thank you for this gem, palpot!
on 11. May 2025, 20:38 by aqjhs
love the hyper meta use of negative space in here!!
