My puzzle is inspired by this puzzle with the same ruleset: frameless-sudoku-by-prasanna-seshadri which is basically a less constrained version of x-sums. It took me 5 attempts total to set this puzzle, and I am quite happy with the final result
Rules: Normal sudoku rules apply. Numbers outside the grid denote that the first N cells of that row/column in that direction sum to that number for some value of N from 1 to 9. N can be different values for different clues.
This puzzle is also available on f-puzzles
Solution code: Columns 8 and 9
on 22. August 2024, 11:16 by Playmaker6174
Unbelievably beautiful and challenging puzzle, certainly among top 2 best N-sum puzzles I've ever solved out there if not THE best one.
Starting with a really gorgeous break-in sequence, then followed by a really tricky yet wonderful set of deductions afterwards; that part around the last 3 rows gave me the brightest smile for a long while there x)
Also here's a sudokupad link (no answer check) for anyone interested: https://sudokupad.app/lltipjurni
on 15. July 2022, 22:17 by Vebby
Wow, amazing construction!
on 5. August 2021, 13:56 by uvo_mod
Label Online-Solving-Tool ergänzt.
on 17. April 2021, 01:16 by marcmees
fantastic construction. Thanks.