Rules:
1. Normal sudoku rules apply.
2. Ratio: Digits separated by the black kropki dot are in a 1:2 ratio.
3. Even: A digit in a grey square is even.
4. Arrow: Digits along an arrow sum to the number in the attached circle.
5. Anti-King: Cells separated by a king's move in chess cannot contain the same digit.
Puzzle:
Solution code: Row 2 and 4:
on 17. September 2025, 07:34 by abadx
ctc link: https://sudokupad.app/7g4jkahy8c
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