Develop Sudoku Game with Python and Pygame

# Introduction

In this project, we will create a Sudoku game using Python and the Pygame library. The game will generate a Sudoku grid of the specified difficulty level and let players solve the puzzle by filling in the empty cells with numbers. The game will provide features like selecting difficulty, highlighting selected cells, and checking if the grid is complete.

## 👀 Preview


## 🎯 Tasks

In this project, you will learn to:

- Import required libraries
- Initialize PyGame
- Define colors
- Set game window dimensions and title
- Create the game window
- Load fonts
- Generate a Sudoku grid
- Solve the Sudoku grid using backtracking algorithm
- Remove numbers from the grid based on difficulty
- Draw the Sudoku grid on the game window
- Check if the grid is fully filled
- Get the cell coordinates under mouse position
- Select the difficulty level
- Implement the main game loop

## 🏆 Achievements

In this project, you will learn:

- How to use the Pygame library for game development in Python
- How to generate a Sudoku grid of a specified difficulty level
- How to solve a Sudoku grid using the backtracking algorithm
- How to handle mouse and keyboard events in Pygame
- How to draw shapes and text on the game window
- How to implement the main game loop in Pygame