text: #ifndef GAME_H
  #define GAME_H
  
  #include <SFML/Audio.hpp>
  #include <SFML/Graphics.hpp>
  #include <memory>
  #include <vector>
  
  #include "Screen/Screen.h"
  
  namespace Sudoku {
  
  class Game {
     public:
      Game();
      void run();
  
      void handleInput();
      void render();
  
      static const int Width = 1152;
      static const int Height = 720;
      static int difficulty;
  
      static std::shared_ptr<Screen> Screen;
  
     private:
      sf::RenderWindow window_;
      sf::Music bgMusic_;
      static const sf::Time TimePerFrame;
      void bgm_init();
  };
  
  }  // namespace Sudoku
  
  #endif