Sudoku: Place digits 1–9 so that each digit appears exactly once in every row, column, and 3×3 box.
Digit mapping: 1 = Black Pawn, 2 = Black Knight, 8 = White Knight, 9 = White Pawn. Digits 3, 4, 5, 6 and 7 are neutral cells with no chess properties.
Nobody hurts: No piece can attack any opposite-color piece on the finished grid.
Attack rules: Knights attack every cell a knight's move away: two squares one way and one square to the side. A white pawn attacks the two cells diagonally above it. A black pawn attacks the two cells diagonally below it.
Online play: https://sudokupad.app/0ttfga6xp0
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Solution code: Enter the digits from row 9.
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