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Every day a new Sudoku in 4 difficulty levels. Also with an archive of several months. Solve according to the sudoku rules: a number (from 1-9) can only be used once in every row, column or 3x3 box.
Every day a new Sudoku in 4 difficulty levels. Also with an archive of several months. Solve according to the sudoku rules: a number (from 1-9) can only be used once in every row, column or 3x3 box.