Alpha-Beta move generator can look 2 plays (4 plies) ahead on a 4x4 board and blocks every possible attempt by the player to connect 3.

It should be possible to play on larger boards when the computers 'move' is changed from playing a tile to picking the player's next available color.

src/view/MainFrame.java

@@ -35,8 +35,9 @@ public class MainFrame extends JFrame {
 
 	private void init() {
 		ScorePanel sp = new ScorePanel(referee);
-		TileSelectionPanel tp = new TileSelectionPanel(referee.getHumanPlayer());
+		referee.setScorePanel(sp);
 		
+		TileSelectionPanel tp = new TileSelectionPanel(referee.getHumanPlayer());
 		BoardPanel bp = new BoardPanel(referee,tp);
 		referee.setBoardPanel(bp);
 		
@@ -82,7 +83,7 @@ public class MainFrame extends JFrame {
 		add(vWrapper,BorderLayout.CENTER);
 		
 		//To ensure correct size, pre-populate the score and message panels with text.
-		sp.updateScore();
+		sp.updateScore(0);
 		mp.updateMessage("Loading new game...");
 		
 		pack();

src/view/ScorePanel.java

@@ -11,17 +11,15 @@ public class ScorePanel extends JPanel {
 	private static final long serialVersionUID = 1L;
 
 	private final JLabel message = new JLabel();
-	private final Referee referee;
-
+	
 	public ScorePanel(Referee ref) {
-		referee = ref;
 		add(message);
 	}
 
-	public void updateScore() {
+	public void updateScore(final int score) {
 		SwingUtilities.invokeLater(new Runnable() {
 			public void run() {
-				message.setText("Score: " + referee.getScore());
+				message.setText("Score: " + score);
 			}
 		});
 	}

src/view/TileSelectionPanel.java

@@ -9,9 +9,10 @@ import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.SwingUtilities;
 
+import player.HumanPlayer;
+
 import controller.TSPMouseListener;
 
-import model.HumanPlayer;
 import model.Board.TileColor;
 
 public class TileSelectionPanel extends JPanel {