Diagonal Sudoku (Sudoku X)
Same classic 9×9 rules — every row, column, and 3×3 box must contain digits 1–9 once — plus both long diagonals. Highlighted diagonal cells show the extra constraint while you play.
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Loading Diagonal puzzle…
Same classic 9×9 rules — every row, column, and 3×3 box must contain digits 1–9 once — plus both long diagonals. Highlighted diagonal cells show the extra constraint while you play.