Sudoku-Solver

This Sudoku Game Is Made in C++ using Bracktracking algorithm This repo consists of file It includes a graphical GUI as well as a text based version.

Run Sudoku_end.cpp to play sudoku.

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.

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.

DEMO - Sudoku_end.cpp

=============== SUDOKU ================
              EASY LEVEL
=======================================

                             ________________________
                            |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 |
                            |_______|________|_______|

 Press [1]  to Pause the Game.
 and  Press[2] to find solution of the SUDOKU

Pressing-'2' for solution:

=============== SOLUTION ================
                             ________________________
                            |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 |
                            |_______|________|_______|
successfully solved the board!

Here , the solution.

=======================================
(Press any key to go back!)

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

How to Play the game:

=============== SUDOKU ================

[1] START
[2] INSTRUCTIONS
[3] EXIT
=======================================
(Press the number of your choice!)

PRESSING THE '1' TO START THE GAME:

=============== SUDOKU ================
          SELECT A DIFFICULTY
[1] EASY
[2] MEDIUM
[3] HARD
=======================================
[4] BACK
=======================================
(Press the number of your choice!)

SELECTING THE LEVEL OF DEFICULTY ACCORDING TO YOUR CHOICE !

EXAMPLE:- PRESSING 2 FOR MEDIUM LEVEL GAME PLAY

=============== SUDOKU ================
             MEDIUM LEVEL
=======================================

                             ________________________
                            |0 8 4  | 2 0 0  | 0 0 9 |
                            |1 0 2  | 8 0 0  | 5 0 0 |
                            |9 0 0  | 0 6 0  | 0 0 3 |
                            |_______|________|_______|
                            |0 9 0  | 0 0 0  | 2 7 0 |
                            |5 0 0  | 0 0 0  | 0 0 8 |
                            |0 4 8  | 0 0 0  | 0 3 0 |
                            |_______|________|_______|
                            |7 0 0  | 0 2 0  | 0 0 1 |
                            |0 0 3  | 0 0 6  | 7 0 4 |
                            |4 0 0  | 0 0 5  | 3 9 0 |
                            |_______|________|_______|

 Press [1]  to Pause the Game.
 and  Press[2] to find solution of the SUDOKU

Finally to solve the board press 2, sit back and watch the algorithm run.

PRE-REQUISITES

Your laptop with C++ installed.

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

Windows: Download the version for your laptop via https://sourceforge.net/projects/orwelldevcpp/

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

---

Run using DevC++

1. Clone or download repositiory: https://github.com/eddyvk01/Sudoku-Solver.git
2. In source folder, run Sudoku_end.exe to start program, optionally, run with --help argument to see other runtime options.

ThankYou!