Quiz

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: Sudoku challenges is a logic-based, combinatorial number-placement puzzle. the objective is to fill a 9 Ã— 9 grid with digits so that each column, each row, and each of the nine 3 Ã— 3 sub-grids that compose the grid (also called "boxes" or "blocks") contain all of the digits from 1 to 9. each puzzle will start at a partially completed grid, which has a single solution.