Up to Something
(Published on 6. July 2025, 14:20 by sujoyku)
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Dynamic Fog: The grid is covered in fog. Correctly placing a digit will clear any fog in its own cell, and potentially clear fog in other cells too. No guessing is required.
- Up to Given-sums: Each row, column, and 3x3 region contains exactly one given digit whose exact location is to be deduced. No two givens are identical digits, i.e. each of the digits 1 to 9 is given exactly once. A clue outside a row or column indicates the sum of all digits up to the given digit. (The given digit itself is not included in the sum.)
- Arrows: Digits on an arrow sum to the digit in the circle from which the arrow emerges.
- Kropki: Digits joined by a black dot have a 1:2 ratio. Digits joined by a white dot are consecutive. (Not all dots are given.)
Here you can solve the puzzle online:
Solution code: given digits from top to bottom (9 digits in total)
Comments
on 13. July 2025, 18:25 by abadx
Sorprendentemente encantador. La lógica tras la no repetición de los dígitos es impecable y da lugar a combinaciones insospechadas
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¡Gracias para tu comentario, abadx! Es fantastico que te ha gustado este rompecabezas.
Saludos cordiales, sujoyku
on 11. July 2025, 13:33 by TheBigOOO
Just smooth. Great puzzle.
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Thank you, TheBigOOO!
Kind regards, sujoyku
on 10. July 2025, 21:49 by dzamie
Took me a few false starts before I finally figured out I was gonna mark the possible given spaces.
Really fun! I enjoyed how the given-sums stayed relevant through most of the puzzle!
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Thank you for your comment, dzamie! I am glad you liked the Up to given-sum clues and had a fun solve.
Kind regards, sujoyku
on 10. July 2025, 18:20 by nbdurie
This was a lot of fun with great flow!!
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Thank you, nbdurie! I am glad you enjoyed the puzzle's flow.
Kind regards, sujoyku
on 9. July 2025, 10:24 by grrz
A very nice puzzle with an interesting start. The “no two givens are identical rule” really drives the puzzle!
I stuck in the middle for a while when narrowing down options all over the board and finding the sweet spot but then it went smoothly.
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Thank you for commenting, grrz! I am glad you liked the puzzle and enjoyed a smooth solve.
Kind regards, sujoyku
on 9. July 2025, 00:05 by nearestneighbour
Solving this puzzle was such a delight. I love the Up to Given-sums rule!
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Thank you for your kind words, nearestneighbour! I am glad you had a delightful solve.
Kind regards, sujoyku
on 8. July 2025, 23:23 by Exigus
Very nice, steady flow but still a bit tricky. Thanks!
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You are much welcome, Exigus, thank you for your comment! I am glad you liked the puzzle.
Kind regards, sujoyku
on 8. July 2025, 13:46 by madhupt
Very smooth and fun puzzle!
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Thank you for your comment, madhupt! I am glad you had a smooth solve.
Kind regards, sujoyku
on 8. July 2025, 10:08 by varbrad
Lovely puzzle. Missed the "No two givens are identical" clue for a while, which proved key to unravelling the final parts of the puzzle.
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Thank you for commenting, varbrad! The rule you mentioned is indeed crucial. I hope it did not trip you up too much.
Kind regards, sujoyku
on 8. July 2025, 06:35 by TeddieMilo
Very nice puzzle.
Got a quick start then stuck in the middle a little but overall nice puzzle with interesting rules.
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Thank you for your comment, TeddieMilo! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 8. July 2025, 01:48 by MSDOS
Very creative use of the constraint and lovely logic throughout! Very elegant design!
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Thank you, MSDOS! It is great to hear you liked the idea of this puzzle.
Kind regards, sujoyku
on 7. July 2025, 19:04 by h1dd3ntrip7e
Incredible break-in AND awesome flow. Great constraint and used brilliantly.
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Thank you for your kind words, h1dd3ntrip7e! I am glad you liked the break-in and the flow of the puzzle.
Kind regards, sujoyku
on 7. July 2025, 18:11 by RedBarchetta
I was sure I was being trolled because I tried the puzzle three times and it kept breaking! Until the fourth time I went stupid slow and realized that I was treating the white dot as a black dot! ARGH! Great Puzzle - very fun - even the fourth time!
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Thank you for your nice comment and sticking with it, RedBarchetta! I can definitely relate. Sometimes one gets locked into some wrong conception like that. Anyhow, I am glad you eventually had a fun solve.
Kind regards, sujoyku
on 7. July 2025, 13:58 by marty_sears
This was a really lovely puzzle! Brilliant response to the 'givens in fog' prompt - the 'up to' ruleset worked perfectly with this. I have never solved a puzzle with that rule before but I really enjoyed it. I did get stuck several times, but always through my own buffoonery rather than a problem with the puzzle. Loved the endgame, as the options for the given digits started to get narrowed down a lot. Excellent solution code too :)
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Thank you for your comment, marty_sears! It is great to hear you enjoyed the puzzle and liked the solution code. :)
Kind regards, sujoyku
on 7. July 2025, 04:36 by NotSoMagnifique
I will freely admit to tripping and stumbling and guessing a bit, but I'm still glad I tried this!
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Thank you for your comment, NotSoMagnifique! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 7. July 2025, 03:59 by Karitsu
Stunning! Loved every moment!
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Thank you for your kind words, Karitsu! It is great to hear you enjoyed the solve.
Kind regards, sujoyku
on 7. July 2025, 03:15 by hardline35
Very original rule, great puzzle, thank you!
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You are much welcome, hardline35, thank you for your comment! If you like the "Up to ..." sums, feel free to check out my puzzles with Up to N-clues. :)
Kind regards, sujoyku
on 6. July 2025, 22:41 by myotisjohn
Brilliant puzzle, love how it flows.
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Thank you for your comment, myotisjohn! It is great to hear you liked the puzzle's flow.
Kind regards, sujoyku
on 6. July 2025, 22:09 by nunc
Really nice puzzle! Thanks for sharing
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You are much welcome, nunc, thank you for your comment! I am glad you liked the puzzle.
Kind regards, sujoyku
on 6. July 2025, 21:41 by Sinuit
Perfect! Thanks!
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Thank you, Sinuit!
Kind regards, sujoyku
on 6. July 2025, 20:48 by Franjo
Wunderbar, wie hier das „up to irgendwas“ verbaut wurde! Tolle Konstruktion, ganz tolle Idee, tolles Puzzle. Herzlichen Dank dafür.
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Sehr gern geschehen, Franjo, vielen Dank für deinen Kommentar! Es freut mich, dass Dir das "Up to irgendwas" gefallen hat. :)
Herzliche Grüße, sujoyku
on 6. July 2025, 20:21 by Nylimb
Very nice; thanks!
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Thank you, Nylimb!
Kind regards, sujoyku
