La Mer
(Published on 14. September 2025, 01:21 by sujoyku)
I like to thank NEWS, Calvinball, MaizeGator and Palyfly Kampling for testing and thank Scojo, Hatgurl and Ratfinkz for organizing this amazing event. I 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.
- Region Sum Lines: Box borders divide the blue lines into segments with the same sum. (Different lines may have different sums.)
- 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: Row 4 from left to right (9 digits in total)
Comments
on 28. September 2025, 20:35 by Blobz
First time I’ve encountered “up-to-N” constraints. Some nice interactions!
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Thank you for your comment, Blobz! I have a few Up to N puzzles in my catalogue, but it still is a relatively fresh constraint. If you like the variant, I can also highly recommend Marty Sears' puzzle "Ten to N".
Kind regards, sujoyku
on 24. September 2025, 13:47 by Montikulum
Excellent!
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Thank you, Montikulum!
Kind regards, sujoyku
on 18. September 2025, 23:13 by Hengist
This might be the hardest puzzle I've completed, took 75 minutes and had me close to surrender multiple times. But there always was just barely enough information to figure it out! I think it deserves 3 stars for difficulty.
It never felt tedious either, very nice flow. One of my favourites so far.
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Congratulations, Hengist, and thank you for your comment! I am glad that you liked the puzzle's flow.
Kind regards, sujoyku
on 18. September 2025, 12:44 by Jensa
Loved it!
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Thank you, Jensa!
Kind regards, sujoyku
on 17. September 2025, 22:43 by Treme
I made it! I didn’t think I would but I did lol
Thank you :)
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Congratulations, Treme, and thank you for your comment! I hope you had a fun solve.
Kind regards, sujoyku
on 16. September 2025, 04:53 by Lorena
Debussy would be proud!
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Thank you, Lorena!
Kind regards, sujoyku
on 15. September 2025, 20:06 by PancakePie
What a beautiful puzzle! Fun from start to finish. Thank you for this!
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You are much welcome, PancakePie, thank you for your comment! I am glad you had a fun solve.
Kind regards, sujoyku
on 15. September 2025, 12:04 by mscha
Nice one! This is one of those puzzles where it seems like there's nowhere near enough information to solve it, but it just turns out to be enough.
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Thank you for your comment, mscha! I am glad that you enjoyed the puzzle. I think I understand your experience. Some of the clues might have more impact than they initially appear to have.
Kind regards, sujoyku
on 14. September 2025, 22:02 by sujoyku
Many thanks for your kind comments, @chinesemaster, @QuiltyAsCharged, @Snookerfan, @meiwanmeiliao, @chubnatty and @Franjo! I am glad that you liked the puzzle.
Kind regards, sujoyku
//
Vielen Dank für Eure freundlichen Kommentare, @chinesemaster, @QuiltyAsCharged, @Snookerfan, @meiwanmeiliao, @chubnatty und @Franjo! Es ist schön, dass Euch das Rätsel gefallen hat.
Herzliche Grüße, sujoyku
on 14. September 2025, 21:32 by Franjo
Up-to-N ist natürlich verräterisch, doch könnte das eben deshalb auch ein Betrüger benutzen. Gut, dass ich nicht raten musste. Stattdessen durfte ich einfach beide Aufgaben in vollen Zügen genießen. Vielen Dank dafür!
on 14. September 2025, 18:22 by chubnatty
Really enjoyable logic, though my brain was fighting me for the first 10 minutes until I read the rules correctly. Found initial breakin straightforward, but then got stumped for a while. Such a satisfying hump to overcome, though! Thanks for a great puzzle!!
on 14. September 2025, 17:04 by meiwanmeiliao
翻译中文，然后看不懂，规则看不懂，这题目确实很难做了，完全不懂数字提示的规则…
on 14. September 2025, 13:18 by Snookerfan
Very nice! To get started maybe 3 stars difficulty, after that really smooth and indeed 2 stars. Thank you
on 14. September 2025, 11:47 by QuiltyAsCharged
Such an elegant puzzle!
on 14. September 2025, 04:59 by chinesemaster
Keep these up to n puzzles coming pls!!! Addicted to them!
on 14. September 2025, 01:30 by marty_sears
The worthy winner. Great puzzle mate, as smooth as usual
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Thank you, Marty! I am glad you liked it.
Kind regards, sujoyku
