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 3×3 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 3×3 box.
