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valid sudoku leetcode def isValidSudoku(board): def is_valid(board, row, col, num): for i in range(9): if board[row][i] == num or board[i][col] == num: return False if board[3 * (row // 3) + i // 3][3 * (col // 3) + i % 3] == num: return False return True for i in range(9): for j in range(9): if board[i][j] != '.': if not is_valid(board, i, j, board[i][j]): return False return True Step 2: Test the function with a sample Sudoku grid. How to Play Extreme Sudoku To start solving an Extreme Sudoku puzzle, follow these steps: Download the Puzzle : Obtain a printable Extreme Sudoku puzzle from a reputable source. microsoft sudoku collection This will help you narrow down the possible values for the remaining cells and make solving the puzzle easier. nytimes sudoku answers How to Play Swordfish Sudoku Set up a standard Sudoku grid, which consists of nine 3x3 blocks arranged in a 9x9 grid. nytimes sudoku answers Use a Pencil : Since there are fewer squares in Mini Sudoku, you can use a pencil to make tentative marks and easily cross off possibilities as you go. sudoku books will shortz
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