diff --git a/Hitori/src/main/java/PR2/HitoriSpiel/GUI/GameBoard.java b/Hitori/src/main/java/PR2/HitoriSpiel/GUI/GameBoard.java
index e91fdf0..b4ed3fa 100644
--- a/Hitori/src/main/java/PR2/HitoriSpiel/GUI/GameBoard.java
+++ b/Hitori/src/main/java/PR2/HitoriSpiel/GUI/GameBoard.java
@@ -2,11 +2,13 @@ package PR2.HitoriSpiel.GUI;
 
 import PR2.HitoriSpiel.Domain.HitoriBoard;
 import PR2.HitoriSpiel.Domain.HitoriCell;
+import PR2.HitoriSpiel.Domain.HitoriValidator;
 
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 
+
 public class GameBoard extends JPanel  {
 
     private final HitoriBoard board; // Verbindung zur Logik
@@ -38,6 +40,12 @@ public class GameBoard extends JPanel  {
     }
 
     private void toggleCellState(HitoriCell cell) {
+
+        if (cell == null) {
+            System.err.println("Ungültige Zelle! Der Zustand kann nicht geändert werden.");
+            return;
+        }
+
         if (cell.getState() == HitoriCell.CellState.GRAY) {
             cell.setState(HitoriCell.CellState.BLACK);
         } else if (cell.getState() == HitoriCell.CellState.BLACK) {
@@ -62,4 +70,16 @@ public class GameBoard extends JPanel  {
                 break;
         }
     }
+
+   public void resetBoard() {
+        board.resetBoard(); // Aufruf der Methode aus HitoriBoard
+        revalidate();
+        repaint();
+    }
+
+    public boolean validateCurrentBoard() {
+        HitoriValidator validator = new HitoriValidator(board);
+        return validator.validateBoard(board.getSolutionCoordinates());
+    }
+
 }
\ No newline at end of file