Zipper++
(Published on 10. January 2024, 19:49 by RockyRoer)
The Rules:
- [Normal sudoku rules apply]: Fill every row, column and 3x3 box with the digits from 1 to 9 once each, with no repeats.
- [Incremental Zipper Lines] The lavender lines are variant of zipper lines. In regular zipper lines, each pair of digits coming out from the center digit on a line sums to the same thing. In this puzzle, the sums of each pair of digits coming out from the center increases by one.
- For an odd length line, if the center cell has a value x, the next pair out from the center add to x + 1, then x + 2, etc...
- eg. 12768 (7, 8, 9)...
- For an even length line, if the center pair adds to x, the next pair adds to x+1, then x+2, etc...
- e.g. 645798 (12, 13, 14...)
- For an odd length line, if the center cell has a value x, the next pair out from the center add to x + 1, then x + 2, etc...
The Puzzle:
Try it on CTC sudoku pad or Sirxemics Sudoku Maker
Solution code: Row 7 from left to right
Comments
yesterday, 01:31 by MysticMan
Nice twist on the zipper constraint. Lovely puzzle!
on 6. November 2025, 19:05 by Richard
That is a very nice modification of Zipper lines! Thx. :)
Reply: Thanks! Does this mean there's a SVS++ coming soon?
---
Reply: Yes! In fact: very soon (half an hour from now...)
on 23. April 2024, 11:38 by lmdemasi
Loved the incrementing zipper line constraint!
on 17. January 2024, 04:08 by gdc
this ruleset is surprisingly intuitive and creates the weirdest goodliffs that I've seen in a long time. Love it!
on 13. January 2024, 09:01 by marcmees
original. thanks
on 12. January 2024, 00:10 by samuel1997
This ruleset looks crazy at first blush, but turns out it is totally manageable, and also elegant!
on 11. January 2024, 15:36 by GeorgeTheToad2
Another great addition to the puzzle variants, most enjoyable.
on 11. January 2024, 02:26 by Bankey
That was fun! Thanks, @ RockyRoer :).
on 10. January 2024, 21:54 by CHRosenthal
Really good maths practice :D
