Fourensic N-tropist (with sujoyku)
(Published on 19. October 2025, 23:34 by Calvinball)
Yet again myself and sujoyku have teamed up, we pretty much agreed at each other that Entropy and Up to N could make a great pairing, and got right to work!
If you have any questions feel free to DM us on Discord.
Happy solving!
Rules:
- Normal sudoku rules apply. Place the digits 1-9 once in every row, column, and box.
- 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.)
- Entropic Lines: Any three adjacent digits along a peach line must contain one low digit (1, 2, or 3), one medium digit (4, 5, or 6) and one high digit (7, 8, or 9).
Solution code: Row 4
Comments
on 19. July 2026, 02:52 by MysticMan
Lovely puzzle!
on 22. October 2025, 00:48 by dzamie
I feel like I must've missed something, because this definitely felt harder than a 2*
Certainly fun, though! I wound up using the second set of sudokupad colors, since the grey line is... bad to look at.
on 21. October 2025, 18:38 by damo_89
Correct solution code!
on 20. October 2025, 20:56 by Franjo
Thank you very much for creating and sharing this beautiful puzzle.
on 20. October 2025, 04:25 by zardoz37
This has a lovely smooth solve path.
on 20. October 2025, 02:10 by mellowrobinson
Wow! Somehow it's super intricate but at the same time approachable and smooth. Great work guys!
on 20. October 2025, 01:29 by ViKingPrime
I've said it before and I'll say it again, Up-to-N sums are my favourite new constraint.
on 19. October 2025, 23:35 by sujoyku
Thank you for the fun collab, Calvinball!
