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/model/BoardScorer.java

@@ -0,0 +1,24 @@
+package model;
+
+/**
+ * Scorer for use by various ComPlayer implementations.
+ * 
+ * @author Woody
+ *
+ */
+public class BoardScorer {
+
+	public int getMaxScore(Board board) {
+		return Board.NUM_ROWS * Board.NUM_COLS;
+	}
+
+	public int getScore(Board board) {
+		int score = 0;
+		for (int r = 0; r < Board.NUM_ROWS; r++) {
+			for (int c = 0; c < Board.NUM_COLS; c++) {
+				score += board.getTile(r, c) == Board.TileColor.NONE ? 0 : 1;
+			}
+		}
+		return score;
+	}
+}