Sudoku is a cross-number crossword that will definitely challenge your brain as well as your patience. (Level of Difficulty on a scale of 1-5: Monday and Tuesday, 1; Wednesday and Saturday ...

The difficulty level of a Sudoku puzzle can be easy ... columns, and grids. 2. Sudoku Pencil Marking Another systematic Sudoku solver strategy is pencil marking which means you pencil in possible ...

On one level, sudoku is a simple and fun way to pass the ... in every single sudoku puzzle – as those in the four 2 x 2 ...