add winner function to board.

lib/src/main/java/edu/tictactoe/Board.java

@@ -1,8 +1,5 @@
 package edu.tictactoe;
 
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
 import java.util.Random;
 import java.util.Timer;
 import java.util.TimerTask;
@@ -11,7 +8,6 @@ import javax.swing.Icon;
 import javax.swing.ImageIcon;
 import javax.swing.JOptionPane;
 
-import java.awt.Component;
 import java.awt.EventQueue;
 import java.awt.Frame;
 import java.awt.image.BufferedImage;
@@ -83,7 +79,7 @@ public final class Board {
     }
 
     protected boolean winnerCheck() {
-        HashSet<BoardButton> checks = new HashSet<BoardButton>(9);
+
         if ((buttons[0].played && buttons[4].played && buttons[8].played)
                 &&
                 buttons[0].player == buttons[4].player
@@ -101,6 +97,51 @@ public final class Board {
             return true;
 
         }
+
+        if ((buttons[0].played && buttons[1].played && buttons[2].played)
+                &&
+                buttons[0].player == buttons[1].player
+                && buttons[1].player == buttons[2].player) {
+            return true;
+
+        }
+
+        if ((buttons[3].played && buttons[4].played && buttons[5].played)
+                &&
+                buttons[3].player == buttons[4].player
+                && buttons[4].player == buttons[5].player) {
+
+            return true;
+        }
+
+        if ((buttons[6].played && buttons[7].played && buttons[8].played)
+                &&
+                buttons[6].player == buttons[7].player
+                && buttons[7].player == buttons[8].player) {
+            return true;
+        }
+
+        if ((buttons[0].played && buttons[3].played && buttons[6].played)
+                &&
+                buttons[0].player == buttons[3].player
+                && buttons[3].player == buttons[6].player) {
+            return true;
+
+        }
+
+        if ((buttons[1].played && buttons[4].played && buttons[7].played)
+                &&
+                buttons[1].player == buttons[4].player
+                && buttons[4].player == buttons[7].player) {
+            return true;
+        }
+
+        if ((buttons[2].played && buttons[5].played && buttons[8].played)
+                &&
+                buttons[2].player == buttons[5].player
+                && buttons[5].player == buttons[8].player) {
+            return true;
+        }
         return false;
     }