Zip Zag (Egubachu & sujoyku)
(Published on 13. July 2024, 09:25 by sujoyku)
Together, we have learned a lot about zipper lines and set a puzzle exclusively based on this constraint. We like to thank Tsswaggy, MattDdraig, gdc, heliopolix, Shintaro-F-H and Flinty for testing and giving feedback on the puzzle. The estimated difficulty is 3 stars. As always, your comments are much appreciated. We wish you happy solving!
- Normal sudoku rules apply: Place the digits 1 to 9 once each in each row, column, and 3x3 box.
- Zipper lines: Cells on a lavender line at an equal distance to the center, which is marked with a dot, sum to the digit at the center.
Here you can solve the puzzle online:
Solution code: Column 1 from top to bottom (9 digits in total)
Comments
on 8. August 2024, 19:28 by Bingomaster
Thanks so much for this puzzle - I’m new to these sudoku variant logic puzzles and this is the first 3* I’ve managed to solve. Took me ages but I got there!
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Congratulations on the solve, Bingomaster, and thank you for your comment! It does not matter how long it takes as long as you have fun along the way. :)
Kind regards, sujoyku
on 6. August 2024, 10:50 by Phistomefel
A very cool variety of logic in there. I enjoyed it thoroughly. Thanks a lot for constructing it, sujoyku and egubachu!
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You are much welcome, Phistomefel, thank you for your comment! We are glad that you liked the different kinds of logic and enjoyed solving the puzzle.
Kind regards, sujoyku
on 5. August 2024, 23:55 by Ragna
What a wonderful Zipper-Puzzle! My favourite Zipper! Thank you for this amazing gem. :-))
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Thank you for your kind words, Ragna! It is great to hear that you enjoyed the puzzle.
Kind regards, sujoyku
on 29. July 2024, 00:08 by fajoogaloo
Really great break-in. Loved the geometry of the puzzle :)
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Thank you for your comment, fajoogaloo! We are glad to hear you liked the break-in idea and the geometry of the puzzle.
Kind regards, sujoyku
on 24. July 2024, 13:34 by Blashyrkh
Amazing! I think this is my favourite zipper puzzle so far.
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Thank you for your kind comment, Blashyrkh! We are glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 15. July 2024, 02:12 by 99%Sneaky
Superb setting, stylistic, smooth, sneaky...stunning!
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Thank you for your kind words, 99%Sneaky! We are glad you enjoyed the puzzle.
Kind regards, sujoyku
on 14. July 2024, 21:45 by ChinStrap
Really cool use of one line type in fresh ways. Loved it!
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Thank you for your comment, ChinStrap! We are glad that you liked the puzzle.
Kind regards, sujoyku
on 14. July 2024, 08:58 by mihel111
Very elegant geometry in boxes 7 and 9. Very good flow all along. A real pleasure to solve.
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Thank you for your kind words, mihel111! We are glad that you liked the puzzle's geometry and enjoyed the solve.
Kind regards, sujoyku
on 14. July 2024, 03:18 by antiknight
Great interactions for a pure Zipper puzzle!
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Thank you for commenting, antiknight! When egubachu and I started out in the monthly prompt, we had a zipper/arrow hybrid in mind. But somehow it ended up being a pure zipper puzzle. Great to hear that you liked its interactions.
Kind regards, sujoyku
on 14. July 2024, 01:12 by sfushidahardy
Extremely nice! Really glad this was my first ever dedicated zipper puzzle :)
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Thank you for your kind comment, sfushidahardy, and thanks again for testing! We are glad that you liked the puzzle.
Kind regards, sujoyku
on 13. July 2024, 21:56 by GorgeousNicko
Wow! Just wow!
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Thank you for commenting, GorgeousNicko! We are glad that you liked the puzzle.
Kind regards, sujoyku
on 13. July 2024, 18:33 by Franjo
A clean Zipper - just wonderful. I really enjoyed the walk on the solution path. It felt so smooth! Thank you so much for sharing this lovely puzzle.
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Thank you for your comment, Franjo! We are glad you had a smooth solve and enjoyed solving the puzzle.
Kind regards, sujoyku
on 13. July 2024, 18:20 by RedBarchetta
Very well designed. It felt so linear - I just kept following the logic to the next step. But gotta admit watching CtC has helped me look for that "next" step. The math was fun to use, and eliminating digits in columns, rows, cells, was a treat. And the end was a great wrap.
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Thank you for your kind words, RedBarchetta! We are glad that you enjoyed the puzzle and found its deductions to be well-telegraphed.
Kind regards, sujoyku
on 13. July 2024, 16:59 by gdc
Absolutely exceptional use of zipper lines. The deductions in this are all very fair, yet it keeps you on your toes with surprising new pieces of logic over and over again until the very end. I am sure Simon will love this!
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Thank you for your kind comment, gdc! As your puzzle "A bit of a stretch" (highly recommended for everyone who has not yet had the pleasure of solving it!) has been a big inspiration for us, it is great to hear that you liked our puzzle.
Kind regards, sujoyku
on 13. July 2024, 14:52 by Fra314
Gorgeous puzzle, exceptional flow and really fun with minimal math skills on my part :D I love it!
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Thank you for your comment, Fra314! We are glad that you liked the flow of the puzzle and had fun solving it.
Kind regards, sujoyku
on 13. July 2024, 12:37 by GeorgeTheToad2
Very nice. Thank you.
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Thank you for your comment, GeorgeTheToad2! We are glad that you liked the puzzle.
Kind regards, sujoyku
on 13. July 2024, 10:17 by Flinty
An excellent Zipper puzzle. We all know Simon loves a Zipper, so fingers crossed this gets its deserved spot on CtC.
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Thank you for your kind comment, Flinty! It is great to hear that you enjoyed the puzzle.
Kind regards, sujoyku
