ANTI-KNIGHT: Cells a knight's move apart cannot contain the same digit.
X: X is a value to be determined by the solver.
Otherwise standard Sudoku rules apply.
Solution code: row 9 col 9
on 30. June 2024, 19:08 by Shuhua Milk
Nice!
on 6. June 2023, 20:13 by Franjo
Love this shading rule! Thank you for setting another puzzle using it. Gave me great fun again!
--- Glad you liked it, thanks for saying. ---ATK
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