diff --git a/src/main/java/src/MainFrame.java b/src/main/java/src/MainFrame.java
index 0b719e2..3f5f6ad 100644
--- a/src/main/java/src/MainFrame.java
+++ b/src/main/java/src/MainFrame.java
@@ -136,6 +136,7 @@ public class MainFrame extends JFrame {
         JMenu m_menu=new JMenu("Sudoku");
         JMenu m_submenu=new JMenu("Neues Spiel");
         JMenuItem menu_i7=new JMenuItem("Speichern");
+        JMenuItem sandbox=new JMenuItem("Sandbox");
         JMenuItem menu_i1=new JMenuItem("Nochmal");
         JMenuItem menu_i2=new JMenuItem("Tipp");
         JMenuItem menu_i4=new JMenuItem("Einfach");
@@ -145,6 +146,7 @@ public class MainFrame extends JFrame {
         m_menu.add(menu_i1);
         m_menu.add(menu_i2);
         m_menu.add(menu_i7);
+        m_menu.add(sandbox);
         m_submenu.add(menu_i4);
         m_submenu.add(menu_i5);
         m_submenu.add(menu_i6);
@@ -161,6 +163,14 @@ public class MainFrame extends JFrame {
         });
         m_menu_help.add(help);
 
+        sandbox.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                SandboxFrame sandboxFrame = new SandboxFrame();
+                sandboxFrame.run();
+            }
+        });
+
         menu_mb.add(m_menu);
         menu_mb.add(m_menu_help);
 
diff --git a/src/main/java/src/SandboxFrame.java b/src/main/java/src/SandboxFrame.java
new file mode 100644
index 0000000..0d2a89a
--- /dev/null
+++ b/src/main/java/src/SandboxFrame.java
@@ -0,0 +1,15 @@
+package src;
+
+import javax.swing.*;
+
+public class SandboxFrame extends JFrame {
+
+    public void run() {
+
+        this.setLayout(null);
+        this.setVisible(true);
+        this.setBounds(400, 200, 500, 500);
+        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+
+    }
+}