Basic Sudoku puzzle solver using backtracking algorithm.
Python 3.8
PyGame Library
This uses a basic backtracking algorithm to solve any standard rules Sudoku puzzle. It takes as an input a string representation of a Sudoku puzzle, displays in the output the Sudoku layout of that puzzle, then displays the solved solution.
The format for the string is: 123456789/234567891/345678912/..., where each '/' signals a new row of numbers. A '0' is used for any unfilled spaces.
Here is an example of the 8/24/21 Sudoku puzzle from the New York Times:
This puzzle would translate in a string interpetation as: "438209061/206008040/001036270/000052400/080900020/320040680/000701802/792600000/005000706".
This outputs to the Python console as:
Which, once solved, outputs as:
This can be seen graphically through the gui.py file. Here is an example of it solving the puzzle above:
