diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0911e3..00d362c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 CHANGELOG
 =========
 
+### Version 9.0
+
+- Add Impossible Mode with at least 17 moves
+- Beginner Levels may only take max one second to compute
+- fix: Level setting was not saved, if "Beginner" was selected
+- fix: LevelGame selection are not re-generated anymore, so they can be solved now
+- Default Level is now "Beginner"
+
 ### Version 8.1
 
 - Popup messages moved to the bottom area
diff --git a/app/build.gradle b/app/build.gradle
index 886e531..caae41f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "de.z11.roboyard"
         minSdkVersion 15
         targetSdkVersion 26
-        versionCode 26
-        versionName "8.1"
+        versionCode 27
+        versionName "9.0"
     }
     buildTypes {
         release {
diff --git a/app/src/main/java/roboyard/eclabs/GridGameScreen.java b/app/src/main/java/roboyard/eclabs/GridGameScreen.java
index 4585194..f445340 100644
--- a/app/src/main/java/roboyard/eclabs/GridGameScreen.java
+++ b/app/src/main/java/roboyard/eclabs/GridGameScreen.java
@@ -60,7 +60,7 @@ public class GridGameScreen extends GameScreen {
     private int currentMovedSquares = 0;
     private long prevTime;
 
-    private static String levelDifficulty="Advanced";
+    private static String levelDifficulty="Beginner";
     private static ArrayList<GridElement> currentMap;
 
     private int IAMovesNumber = 0;
@@ -90,7 +90,7 @@ public GridGameScreen(GameManager gameManager){
         String ld=preferences.getPreferenceValue(gameManager.getActivity(), "difficulty");
         if(ld.equals("")){
             // default difficulty
-            ld="Advanced";
+            ld="Beginner";
             preferences.setPreferences(gameManager.getActivity(),"difficulty", ld);
         }
         setDifficulty(ld);
diff --git a/app/src/main/java/roboyard/eclabs/SettingsGameScreen.java b/app/src/main/java/roboyard/eclabs/SettingsGameScreen.java
index 49e6463..312a1d0 100644
--- a/app/src/main/java/roboyard/eclabs/SettingsGameScreen.java
+++ b/app/src/main/java/roboyard/eclabs/SettingsGameScreen.java
@@ -17,7 +17,7 @@ public class SettingsGameScreen extends GameScreen {
     private GameButtonGeneral buttonSoundOn = null;
     private int hs2;
     private int ws2;
-    private String levelDifficulty="Advanced";
+    private String levelDifficulty="Beginner";
     private Preferences preferences = new Preferences();
 
     private float ratioW = ((float)gameManager.getScreenWidth()) /((float)1080);
diff --git a/download/Roboyard_v8-1.apk b/download/Roboyard_v9-0.apk
similarity index 90%
rename from download/Roboyard_v8-1.apk
rename to download/Roboyard_v9-0.apk
index 0604f57..4545ab6 100644
Binary files a/download/Roboyard_v8-1.apk and b/download/Roboyard_v9-0.apk differ