Zip to N
(Published on 2. April 2026, 13:02 by sujoyku)
I am thanking all who tested and wish you joyful solving!
Rules:
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Zippers: On a lavender line, digits at the same distance to the center (marked by a dot) must add to the the digit at the line's center.
- Up to N-sums: A clue outside the Row or Column N indicates the sum of all digits up to the cell that contains the digit N. (The digit N itself is not included in the sum.)
Here you can solve the puzzle online:
Solution code: Column 9 from top to bottom (9 digits in total)
Comments
on 5. April 2026, 21:57 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
**
You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 3. April 2026, 18:46 by Snookerfan
Beautiful puzzle with some surprising interactions. I had a bit of trouble of finding a step near the end, so therefore 3 stars for me. Thanks
**
You are much welcome, Snookerfan, thank you for your comment! I am glad that you liked the puzzle. Also thanks for sharing your perspective on difficulty. Testing feedback suggested the difficulty should be between 2 and 3*, so I initially uploaded it at 3. Of course, I am not unhappy that a lot of solvers found it easier than 3*, but I definitely think it is harder than a lot of my other 2* puzzles.
Kind regards, sujoyku
on 3. April 2026, 18:23 by Franjo
Fantastische Konstruktion mit einem bildhübschen Einstieg (den ich Dummkopf im ersten Anlauf total vermasselt habe). Herzlichen Dank dafür!
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Sehr gern geschehen, Franjo, vielen Dank für deinen Kommentar! Es freut mich sehr, dass Dir der Einstieg gut gefallen hat.
Herzliche Grüße, sujoyku
on 2. April 2026, 20:24 by wuc
Cool break in logic. Very hand crafted path. Great setting thx.
on 2. April 2026, 20:05 by wuc
Cool break in logic. Very hand crafted path. Great setting thx.
**
Thank you for your comment, wuc! Great to hear you liked the break-in and found the solve path to be well-crafted.
Kind regards, sujoyku
on 2. April 2026, 18:38 by SennyK
Wonderful puzzle, smooth flow from start to end, thank you very much sujoyku! :-)
**
Thanks a lot for your kind words, SennyK! I am glad that you liked the puzzle's flow.
Kind regards, sujoyku
on 2. April 2026, 17:48 by chinesemaster
So excited to see the return of one of my favorite clue types!! Thanks!
**
You are much welcome, chinesemaster, thank you for your comment! It is great to hear you appreciate the Up to N-sums. I should definitely set some more puzzles with them in the future.
Kind regards, sujoyku
on 2. April 2026, 15:17 by Calvinball
Great puzzle that made the absolute most out of all aspects of all it's rules. Would zip agaiN.
**
Thank you for your kind words, Calvinball! I am glad you enjoyed the puzzle.
Kind regards, sujoyku
on 2. April 2026, 14:24 by MarthaB
Fun puzzle. Great interaction between the Zippers and Up-to-Ns.
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Thank you for your comment, MarthaB! I am glad that you liked the interactions.
Kind regards, sujoyku
on 2. April 2026, 13:47 by Qodec
A pleasure to solve. Thanks!
**
You are much welcome, Qodec, thank you for your comment! I am glad you enjoyed the solve.
Kind regards, sujoyku
