Normal sudoku rules apply.
Orthogonally adjacent cells can not sum to 5 or 10.
Two lines of the same length and same color are connected X lines.
Counting from the bulb, the first cell of each connected X line sum to 10. the second cell of each line sum to 10 etc.
There is a 3x3 magic square somewhere in the grid.
(A magic square is a 3x3 square with the digits 1-9 where all rows, columns and diagonals have the same sum)
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Feel free to take special rules for your own puzzle.
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Bless you!
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Example
Solution code: give the digits of column 1 (top to bottom)
today, 09:52 by TroublesomeOrca
Yup - reloaded the solved puzzle, it came up solution checked and yet column 1 doesn't work. A quick visual check of X's, V's and the lines doesn't show an error... I'll put my column 1 as a hidden comment (lol - although I won't be able to see it!). Can you check against yours, please?
on 9. September 2025, 15:21 by NurglesGift
yes column 1
on 18. August 2025, 15:30 by NurglesGift
yes, copy mistake on my part
on 18. August 2025, 14:19 by Villse
Is there a negative restraint on the black dots? (rule listed in sudokupad but not here)
Edit: Got my head out of my ass and managed to solve whitout any black dot rule so I suspect it's just a missprint in the rules :)
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