The name "Sudoku" is derived from the Japanese words "su" (number) and "doku" (single), which essentially means "single number." The game involves filling a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contain all of the digits from 1 to 9. unique rectangle sudokubest free sudoku app without ads iphone Math Sudoku is a variation of the classic Sudoku game, where the objective is to fill a 9x9 grid with numbers from 1 to 9, ensuring that each row, column, and 3x3 subgrid contains all the digits from 1 to 9.
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