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/player/generator/MoveCandidate.java

@@ -0,0 +1,13 @@
+package player.generator;
+
+import model.Move;
+
+public class MoveCandidate {
+	public final Move move;
+	public final GameScore score;
+
+	public MoveCandidate(Move move, GameScore score) {
+		this.move = move;
+		this.score = score;
+	}
+}