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The Sudoku grid consists of a 9x9 matrix, which is further divided into nine 3x3 sub-grids.Some cells in the grid are pre-filled with numbers (from 1 to 9), and the remaining cells are left blank for the player to fill in.Rules of SudokuEach row must contain the numbers 1 to 9 without repetition.Each column must contain the numbers 1 to 9 without repetition.Each 3x3 sub-grid must contain the numbers 1 to 9 without repetition.How to Play SudokuStart by examining the pre-filled numbers in the grid