The Swarm
(Published on 14. December 2024, 17:51 by Gerhard1963)
The Swarm
Since my last zipper line puzzle was a while ago, I decided to make another one.
Rules:
- Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.
- Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage.
- Diagonal: Digits along a marked diagonal cannot repeat.
- Zipper Lines: Digits equidistant from the center of a purple Zipper Line must sum to the digit in the center of the line. Centers of Zipper Lines are marked by small purple dots.
SudokuPad
My Puzzle Catalogue

Solution code: The digits on the negative diagonal (from top left to bottom right).
Solved by jalebc, butch02, RickiFerrara, SKORP17, Joyofrandomness, keenbowl, Bjd, Notlob, pepe74287, PinkNickels, tuturitu, MarthaB, VeTaurus, geronimo92, brandon_bot, avishai, Andrewmi3, strangelyinsane, ... Exigus, asii, Krisonium, Spooof, PrinnyDidi, amb, MysticMan, asver, QuiltyAsCharged, pmatos, Trisolis, imb, Saskia11, Shamalom, PippoForte, OBu42, Kyhl, meowng, NeroChaos, jgarber, trazere, augsod
Comments
on 10. August 2025, 13:14 by OBu42
@softie, under "advanced options" you can enable a "copy button"
on 9. May 2025, 23:12 by MysticMan
Lovely puzzle!
on 19. December 2024, 17:01 by ClayLovesLogic
https://www.youtube.com/watch?v=SaSBCPzfrfw&ab_channel=ClayLovesLogic
great puzzle Gerhard. Link to my solve
on 16. December 2024, 19:40 by softie
@gdc -- how do you copy from Sudokupad? I found an experimental feature that lets me somehow copy a digit from one cell to another, but it doesn't live on my clipboard where I could bring it into another application.
on 15. December 2024, 21:40 by gdc
Fun little snack. Thanks for using a solution code that is compatible with the SudokuPad copy button!
on 15. December 2024, 21:04 by sujoyku
What a delightful puzzle! Thank you very much for setting and sharing, Gerhard1963!
on 15. December 2024, 10:04 by CFood
this was fantastic! i loved how the zipper lines and cages interacted