This Sudoku Game Is Made in Python3 using Bracktracking algorithm This repo consists of two files It includes a graphical GUI as well as a text based version.

Run sudokuGUI.py to play sudoku.
And sudokusolver.py for text based version.

BACKTRACKING is simply reverting back to the previous step or solution as soon as we determine that our current solution cannot be continued into a complete one. We will use this principle of backtracking to implement the following algorithm.

Starting with an incomplete board:

1. Find some empty space
2. Attempt to place the digits 1-9 in that space
3. Check if that digit is valid in the current spot based on the current board
4. a. If the digit is valid, recursively attempt to fill the board using steps 1-3.
   b. If it is not valid, reset the square you just filled and go back to the previous step.
5. Once the board is full by the definition of this algorithm we have found a solution.

we will finish the algorithm and continue to understand by running through our code step by step. We will use a recursive function to implement the algorithm In part 2 (look below) we will implement the entire algorithm with the GUI to show the visuall implimentaion of the game.

Hope You Will Like The Game. also u can use the code to make your own version of game.

7 8 0  | 4 0 0  | 1 2 0
6 0 0  | 0 7 5  | 0 0 9
0 0 0  | 6 0 1  | 0 7 8
---------------------
0 0 7  | 0 4 0  | 2 6 0
0 0 1  | 0 5 0  | 9 3 0
9 0 4  | 0 6 0  | 0 0 5
---------------------
0 7 0  | 3 0 0  | 0 1 2
1 2 0  | 0 0 7  | 4 0 0
0 4 9  | 2 0 6  | 0 0 7
________xxxxxxx SOLVED xxxxxxxxxxxx_____
7 8 5  | 4 3 9  | 1 2 6
6 1 2  | 8 7 5  | 3 4 9
4 9 3  | 6 2 1  | 5 7 8
---------------------
8 5 7  | 9 4 3  | 2 6 1
2 6 1  | 7 5 8  | 9 3 4
9 3 4  | 1 6 2  | 7 8 5
---------------------
5 7 8  | 3 9 4  | 6 1 2
1 2 6  | 5 8 7  | 4 9 3
3 4 9  | 2 1 6  | 8 5 7

PLEASE FEEL FREE TO FORK THE PROJECT AND START CONTRIBUTING. :)

python modules

import pygame

Click a box and hit the number on your keybaord to pencil in a number. To confirm that value press the ENTER key on that box. To delete a pencil in you can click DELETE or BACKSPACE key. Finally to solve the board press SPACEBAR, sit back and watch the algorithm run.

Your laptop with python 3.6.x (onwards) installed.

NOTE: Those with Linux and MacOSX would have Python installed by default, no action required.

Windows: Download the version for your laptop via https://www.python.org/downloads/

NOTES In your preferred editor, make sure indentation is set to "4 spaces".

• Make sure you have pygame installed in python otherwise code may fail, to install pygame in your machine > open python in your terminal then type pip install pygame to install. ⚠️

1. Clone or download repositiory: https://github.com/arevish/Sudoku-solver-GUI.git
2. In source folder, run python3 'sudokuGUI.py' to start program, optionally, run with --help argument to see other runtime options.