Normal 8x8 Sudoku rules.
Antiknight
Identical digits cannot be a knight's move apart.
Arrow
Digits along an arrow sum to the digit in the arrow's circle and can include repeats if allowed by the other rules.
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Solution code: row 8 and column 8
on 24. October 2021, 13:11 by Florian Wortmann
Added ctc-app link
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