A terminal based sudoku solver which takes input in the form of grid/matrix from the user and uses backtracking to solve it.

(note:- Empty spaces in the sudoku should be marked as 0 in the input)

Run the Code with python3 interpreter either in terminal or in any IDE which supports the use of python3 and give the input carefully and then wait to see the output, if the sudoku was valid and input was given correctly then solved sudoku will be printed otherwise the message that the sudoku is invalid and can not be solved will be printed.