My first puzzle with some given digits, enjoy this monstrosity.
Normal sudoku rules apply.
Arrow: Digits along an arrow must sum to the digit in the arrow's circle. If allowed by other rules, digit may repeat.
Diagonal: Digits cannot repeat in marked diagonals.
Puzzle:
Set theory does helps a bit, momentarily.
Solution code: Box 8 in reading order please.
on 17. September 2025, 13:30 by Myfyr MJ
Nice but very very hard.
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