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large sudoku puzzles 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. Improves concentration: Engaging in a Sudoku puzzle requires concentration, which can help improve your focus and attention span. sudoku solver app Conclusion: Arto Inkala Sudoku is a captivating and challenging puzzle game that has captured the hearts of puzzle enthusiasts worldwide. creator of sudoku Look for Subsets: Within the empty rectangle, identify any subsets of digits that share a row, column, or box. sudoku solver app
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