Normal sudoku rules apply. Cells separated by a knight's move cannot contain the same digit. Adjacent digits on a green line must differ by at least 5. Digits separated by an X must sum to 10. The number outside the grid is the sum of the digits sandwiched between the 1 and the 9 in that row.
Solution code: row 1
on 22. October 2022, 22:37 by lerroyy
Very nice break in! thanks
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