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marty s daily sudoku 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. medium printable sudoku Hidden Single and Hidden Pair: These techniques involve identifying cells with only one possible number or a pair of numbers that must be placed in specific positions. sudoku 3x3 solution The Charm of Medium-Level Sudoku Medium-level Sudoku puzzles in The New York Times are designed to be a stepping stone between the simpler beginner puzzles and the more complex expert-level challenges.
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