==== LINKS TO SOLVE ====
==== RULES ====
Diagonal Sudoku rules apply : fill the grid with digits 1 to 9 appearing each exactly once in every row, column, 3x3 box, and marked diagonal.
==== ACKNOWLEDGEMENTS ====
My thanks go to Emphyrio , lerroyy , Sir Schmoopy , Zixyegh , Ambrose , Glum Hippo , Camerz and Gimmickless for testing !
Solution code: Digits from column 1 and then column 9 (both from top to bottom), 18 digits total, no space character.
on 28. September 2022, 12:34 by PrimeWeasel
Very enjoyable!
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