src/GameBoard.java

@@ -221,5 +221,8 @@ public class GameBoard extends JPanel {
     public Player getP1() {
         return p1;
     }
+    public Player getP2() {
+        return p2;
+    }
 
 }

src/MainFrame.java

@@ -151,6 +151,8 @@ public class MainFrame extends JFrame {
         if(player != gameBoard.getP1()){
             return;
         }
+        this.gameBoard.getP1().destroy();
+        this.gameBoard.getP2().destroy();
         LooseScreen looseScreen = new LooseScreen(this);
         mainPanel.add(looseScreen,panelName);
         mainPanel.revalidate();