One Loose Thread
(Published on 19. April 2022, 21:30 by mormagli)
SudokuPad link (via tinyURL)
F-puzzles link
Normal Sudoku rules apply;
Region Sums: Each blue line is divided into segments, separated by region borders (thick black lines). The sum of digits on each line segment is equal to the sum of digits on every segment of the same line.
Solution code: Digits in row 1 (left to right) followed by the digits in row 9 (left to right)
Comments
on 29. November 2023, 09:01 by heliopolix
Wow, just wow! This is one tough knot to untie, but very, very satisfying once it untangles!
on 21. May 2022, 09:10 by mormagli
adjusted difficulty (success!)
on 28. April 2022, 21:45 by mormagli
Attempted to change the difficulty rating to 4/5, based on solver feedback, but lmd seems to crash.
I also removed a clue, which was meant to be helpful but led some solvers down a less elegant/fun solve path. The logic remains unchanged, but now there's one less place to get lost.
You can find the old version here:
https://f-puzzles.com/?id=y4fvwdt2
on 20. April 2022, 19:47 by NotThatItMatters
Good logic, nice break-in. Nice how many different things go into one deduction.
