Oni Sudoku No.421

Puzzles for confident solvers, using advanced techniques such as the X-Wing.

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Oni Sudoku No.421puzzlelounge.app/nanpure

Every column, row and bold 3×3 box holds each digit 1 to 9 once.

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Answer to Oni Sudoku No.421

EasyMediumHardOni

If you are unsure how to solve, see how to solve sudoku, with tips.