Normal Sudoku rules apply. Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.
Arrow Sudoku rules apply. Digits along the arrows in the grid must sum to the digit in its circle.
The puzzle is also available online.
Solution code: Row 1 and column 1
on 4. September 2021, 23:42 by uvo_mod
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