2x2 Java Game

The object of this game is to strategically arrange pieces into 2x2 squares on 9x9 game board. Once 4 balls are aligned in a square, they're destroyed and you're awarded a certain amount of points. However, each time you aren't able to score, the program throws three additonial balls into the mix. Use keys 4, 6, 8, 2, move cursor and 5 to select balls to move and their destination.