Rules
Normal sudoku rules apply.
There are nine pseudo cells in the grid, one in every row, column and box. Each digit from 1-9 appears in a pseudo cell exactly once.
A pseudo cell's value is that of its 3x3 box number.
Within a cage, digits must not repeat and their values sum to the small number in the top left corner.
Solution code: Column 5
on 21. October 2025, 04:23 by Douglass
What a puzzle Nico!!
Just perfect
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ND: Hey, thank you very much!
on 1. September 2025, 13:52 by jubengo
I am glad I found this masterpiece ! It was very fun to solve, thanks for setting it :)
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ND: Thanks you very much, I appreciate it!
on 16. May 2025, 14:43 by Netra
Very smooth logic and fun interaction! I used trial and error for the last part but I figured out how to logically solve it halfway.
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ND: Congrats!
on 16. May 2025, 13:05 by Snaques
What a perfect puzzle all in all!
This certainly provided some challenge, but always offered multiple avenues you could investigate in order to advance with the puzzle so it never felt overwhelming.
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ND: Hey, thanks for solving and for the comment!
on 16. May 2025, 03:37 by Netra
Sorry, what is the order of 3 by 3 box number?
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ND: Hello, top to bottom and left to right.
So top-left is 1 and bottom-left is 7 for example.
on 15. May 2025, 12:51 by Snookerfan
Very nice! Thank you
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ND: You are very welcome!
on 15. May 2025, 00:31 by sujoyku
Incredible puzzle with an superb use of the modifiers. Thank you for setting and sharing this gem, NicoD!
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ND: Thank you very much sujoyku!
on 14. May 2025, 23:14 by Visumation
Very nice. Really enjoyed that. Thanks for sharing
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ND: Thanks, glad you enjoyed!
on 14. May 2025, 12:46 by henter
Cool puzzle, very smooth to solve
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ND: Thank you, glad you enjoyed!
on 14. May 2025, 09:58 by rameshsrivats
Smooth and beautiful Quite brilliant setting, really.
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ND: Thank you very much!
| Difficulty: | ![]() |
| Rating: | 98 % |
| Solved: | 107 times |
| Observed: | 5 times |
| ID: | 000NCD |