Kissing Zipper
(Published on 18. February 2025, 08:00 by twototenth)
Normal Sudoku rules apply. Purple lines are zipper lines; digits an equal distance from the center must sum to the digit in the middle of the line.
The grid contains nine "doublers," one in each row, column, and box; each digit from 1-9 is "doubled" exactly once. Doubled digits count as twice their value for the purposes of the zipper lines.
Sudokupad link (with solution check)
Solution code: Row 9, left to right
Comments
on 28. February 2025, 01:30 by Ragna
Very nice puzzle! And I loved it to see Simon and Chain Bear solving together. That was fun. Thank you for this puzzle. :-)
on 22. February 2025, 15:50 by damo_89
Looked impenetrable, wound up being almost approachable. Lovely stuff. That given digit is mighty!
on 18. February 2025, 18:30 by PaganiusI
Really smooth and interesting from start to finish, thanks alot!
on 18. February 2025, 17:38 by tallcat
Delightful puzzle - and a welcome return from a great setter :)
on 18. February 2025, 17:11 by thoughtbyte
One of my favorite puzzles of recent memory. Super smooth throughout with beautiful, elegant logic and a very consistent approachable difficulty. Thanks!
on 18. February 2025, 14:01 by BenTen
Very nice puzzle. I enjoyed the opening logic especially. Thanks for setting.
on 18. February 2025, 13:55 by rameshsrivats
Beautiful puzzle
