Classic Sudoku
Each row, column, and 3x3 box must have all the digits 1 to 9 only once.
Rules
Each row, column, and 3x3 box must have all the digits 1 to 9 only once.

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Each row, column, and 3x3 box must have all the digits 1 to 9 only once.
Each row, column, and 3x3 box must have all the digits 1 to 9 only once.

Play Classic Sudoku in our apps: