Nebulous Instructions
(Published on 7. September 2026, 15:58 by sujoyku)
I wish you joyful solving!
Rules:
- Normal sudoku rules apply, i.e. each Row, Column, and 3x3 regions has to contain the digits from 1 to 9 once each.
- Dynamic Fog: Some of the clues are covered in fog. Correctly placing a digit may reveal additional clues. No guessing is required.
- Diagonal Target Sums: A clue X outside the grid indicates that the digit X appears on the marked diagonal and all the digits that (seen from the clue) appear on the diagonal before reaching the first instance of the digit X must sum to X.
A ? clue represents a value that must be determined by the solver.
Here you can solve the puzzle online:
Solution code: Column 1 from top to bottom (9 digits in total)
Comments
on 6. October 2026, 01:38 by Vaurien
Congratulations on 300 puzzles! This one was amazing, loved the break-in and the flow was just so nice.
**
Thank you for your kind words, Vaurien! I am glad that you liked the break-in and enjoyed the flow of this puzzle.
Kind regards, sujoyku
on 19. September 2026, 15:36 by johnreid
Glad I solved this because it gives me the opportunity to wish you congratulations on the milestone of 300 puzzles! And also to say a big thank you for all the joyful solving!
**
You are much welcome, johnreid, thank you for your kind words! I am glad that my puzzles brought some joy to you.
Kind regards, sujoyku
on 17. September 2026, 20:00 by ConStar
Fun usage of the fog mechanic. Not too tricky. Interesting but not too demanding throughout. Enjoyed the solve.
**
Thank you for your comment, ConStar! It is great to hear you liked the fog usage and enjoyed the solve.
Kind regards, sujoyku
on 15. September 2026, 21:51 by PancakePie
Beautiful and fun! Congrats on 300!
**
Thank you, PancakePie! I am glad that you had a fun solve.
Kind regards, sujoyku
on 14. September 2026, 22:30 by jaredbitz
Great puzzle - many nice little moments throughout!
**
Thank you for your comment, jaredbitz! I am glad that you enjoyed all those little moments.
Kind regards, sujoyku
on 11. September 2026, 16:04 by varbrad
Amazing puzzle, thanks!
**
You are much welcome, varbrad, thank you for your comment! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 10. September 2026, 20:47 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
**
You are much welcome, Lenivaya_Joppa, thank you for commenting! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 10. September 2026, 02:48 by Astraeus
An absolute delight! Congratulations on 300 puzzles, Sujoyku!
**
Thank you, Astraeus! I am glad you had a delightful solve.
Kind regards, sujoyku
on 10. September 2026, 01:55 by KeenanN
Took me way too long to remember how the target sum clues actually work, but once I did, it was a good solve. Thank you for another lovely puzzle, sujoyku! Congrats on 300 :)
**
Thank you, KeenanN! I am glad that you liked it.
Kind regards, sujoyku
on 9. September 2026, 07:17 by MorsBe
Another brilliant puzzle. Thanks so so much for 300 of them. You are the legend.
**
Thank you for your comment, MorsBe! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 8. September 2026, 20:28 by highonlife
Congratulations on 300!!.
This was a fun solve. Not sure what the rating would be, but its a bit above 3* for me.
**
Thank you, highonlife! I am glad you had a fun solve. Also thanks for sharing your perspective on the difficulty.
Kind regards, sujoyku
on 8. September 2026, 16:41 by baltoguy
Loved the puzzle!
Suggestion for clarity: make the last sentence of the rules a new paragraph. The solver should digest the X clue before trying to understand the ? clue.
**
Thank you for your suggestion, baltoguy! I have made the part about the ? clue an own line in the rules.
Kind regards, sujoyku
on 8. September 2026, 14:09 by Thanos13
Congratulations on the 300th puzzle sujoyku! Thank you for giving the community so many hours of joy! :)
**
Thank you for your kind words, Thanos13! I love puzzles, so it is great to hear that mine bring joy to others as well.
Kind regards, sujoyku
on 8. September 2026, 08:12 by Saltensity
Beautiful puzzle with a very smooth flow! Thank you and congratulations on your 300th puzzle ;D
**
Thank you for your comment, Saltensity! I am glad that you liked the puzzle's flow.
Kind regads, sujoyku
on 8. September 2026, 02:05 by pagedo
Another great puzzle. Congratulations on your 300th puzzle.
**
Thank you, pagedo!
Kind regards, sujoyku
on 8. September 2026, 00:15 by Prince Myshkin
Amazing! Congrats on and thanks for 300 puzzles!
**
You are much welcome, Prince Myshkin, thank you for the congratulations! I am glad that you liked the puzzle. Now on to the next 300. :)
Kind regards, sujoyku
on 7. September 2026, 22:44 by farodin64
Sehr cleveres Konzept und eine perfekte Umsetzung. Deines Jubiläums würdig. Glückwunsch, und auf die nächsten 300, auf die wir uns schon jetzt freuen! ;)
on 7. September 2026, 22:43 by farodin64
Sehr cleveres Konzept und eine perfekte Umsetzung. Deines Jubiläums würdig. Glückwunsch, und auf die nächsten 300, auf die wir uns schon jetzt freuen! ;)
**
Vielen Dank, farodin64! Es ist schön zu hören, dass Dir das Konzept dieses Rätsels gefallen hat.
Herzliche Grüße, sujoyku
on 7. September 2026, 22:34 by Christounet
Happy 300th! Thanks :)
**
Thank you, Christounet!
Kind regards, sujoyku
on 7. September 2026, 20:48 by Franjo
Herzlichen Glückwunsch zum eindrucksvollen Jubiläum! Und herzlichen Dank für dieses erstaunliche Jubiläumspuzzle! Große Klasse!
**
Vielen Dank, Franjo! Es freut mich, dass Dir mein Jubiläumsrätsel gefallen hat.
Herzliche Grüße, sujoyku
on 7. September 2026, 20:26 by mihel111
Congrats, Sujoyku. A lovely break in and a fluent solve after. How not to enjoy.
**
Thank you, mihel111! I am glad that you enjoyed this puzzle.
Kind regards, sujoyku
on 7. September 2026, 19:51 by amirs
Very nice puzzle! Congrats on the milestone
**
Thank you, amirs!
Kind regards, sujoyku
on 7. September 2026, 16:36 by Prof.Dori
Congrats on the 300th post, really nice one and I am honored it is a puzzle with a rule I invented. Good job and keep it going!
**
Thank you for the kind words, Prof.Dori! The Targets Sums are such a fun constraint. Thanks again for introducing them!
Kind regards, sujoyku
