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Fill in Empty Spaces: Once you've determined the values of some cells, fill in the empty spaces with the appropriate digits. extremely difficult sudokugifts for sudoku lovers The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid contain all of the digits from 1 to 9. 247 winter sudoku Use Grid Paper Drawing lines and making notes on grid paper can help you visualize the puzzle and keep track of your progress.
