Region X-Sums
(Published on 4. October 2022, 08:00 by twototenth)
Normal Sudoku rules apply. Blue lines are region sum lines; the digits along these lines must have the same sum in each region entered by the line (including the region outside the grid). If a line visits the same region multiple times (including the region outside the grid), each visit is a separate instance of the same sum. Values outside the grid are X-sums; they indicate the sum of the first X cells in the respective row or column in that direction where X is the first digit.
Penpa link - note that the answer check will only go off if the X-sum totals on the lines are also filled in.
CTC link - note that because of the unusual grid layout, F-puzzles and CTC WILL NOT accept the solution as correct, either with or without the X-sum totals entered.
Solution code: Row 9 followed by column 3, no spaces
Comments
on 26. May 2023, 10:06 by Bankey
Fun combo of X sums and RSL. Thanks, @ twototenth:)
on 10. October 2022, 17:23 by glum_hippo
Well, that was very lovely.
on 10. October 2022, 05:32 by tallcat
Very nice and clever construction indeed. Good use of interplay between the lines and outside clues! Enjoyed immensely.
on 5. October 2022, 01:54 by JeremyDover
Another super-enjoyable puzzle...thanks for your craft!
on 5. October 2022, 01:08 by Qril
Very approachable, fun logic! Awesome puzzle overall :)
on 5. October 2022, 00:47 by twototenth
F-puzzles and CTC links added, thanks to Xenonetix! (These links WILL NOT confirm the solution to be correct due to the unusual grid layout.)
on 4. October 2022, 21:20 by djorr
Very fun use of the x-sum constraint with these lines! They work very well together.
