Normal sudoku rules apply.
Every straight diagonal line of digits that sums to 19 is marked in grey.
No other straight diagonal lines of digits sum to 19.
Solution code: row 9
on 24. May 2022, 18:11 by Scruffamudda
So sorry! I mixed up 2 digits in the solution code. Fixed now.
on 24. May 2022, 12:53 by Piatato
Nice puzzle! Yeah, I think the solution code must be incorrect.
on 24. May 2022, 11:58 by PippoForte
Is the solution correct?