Free Sudoku puzzles on Sudoku-Land. Four levels of difficulty, sudoku puzzle easy, medium, hard and devilish.
Sudoku is a logic based, number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid (also called "boxes", "blocks", "regions", or "sub-squares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution.
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