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A standard Sudoku grid consists of 9x9 squares, divided into nine 3x3 subgrids called "boxes." The objective is to fill the grid with numbers from 1 to 9, ensuring that each row, column, and box contains unique numbers. hard sudoku printabledaily printable sudoku This mental exercise promotes cognitive flexibility, making it easier to adapt to new situations and tasks. By following the steps and tips outlined in this article, you'll be well-equipped to tackle this exciting puzzle. nytimes puzzles sudoku
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