diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameController.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameController.java
index 1a0fbbc..88e2472 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameController.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameController.java
@@ -64,6 +64,7 @@ public class GameController implements IModelChangedListener, Parcelable {
     private GameType gameType;
     private GameDifficulty difficulty;
     private CellConflictList errorList = new CellConflictList();
+    private boolean gameIsCustom;
 
     // Undo Redo
     private UndoRedoManager undoRedoManager;
@@ -91,6 +92,7 @@ public class GameController implements IModelChangedListener, Parcelable {
     public GameController(GameType type, SharedPreferences pref, Context context) {
         this.context = context;
         this.gameBoard = new GameBoard(type);
+        this.gameIsCustom = false;
 
         setGameType(type);
         setSettings(pref);
@@ -102,6 +104,8 @@ public class GameController implements IModelChangedListener, Parcelable {
         return gameID;
     }
 
+    public boolean gameIsCustom() { return gameIsCustom; }
+
     public void loadNewLevel(GameType type, GameDifficulty difficulty) {
         NewLevelManager newLevelManager = NewLevelManager.getInstance(context, settings);
 
@@ -141,6 +145,7 @@ public class GameController implements IModelChangedListener, Parcelable {
         this.difficulty = gic.getDifficulty();
         this.time = gic.getTimePlayed();
         this.usedHints = gic.getHintsUsed();
+        this.gameIsCustom = gic.isCustom();
 
         setGameType(gic.getGameType());
         this.gameBoard = new GameBoard(gic.getGameType());
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameStateManager.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameStateManager.java
index c50ba6c..a4e9af1 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameStateManager.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameStateManager.java
@@ -89,6 +89,10 @@ public class GameStateManager {
                     gic.parseNotes(values[i++]);
                     gic.parseHintsUsed(values[i++]);
 
+                    if (values.length > i) {
+                        gic.setCustom(true);
+                    }
+
                     if (gic.getID() == GameController.DAILY_SUDOKU_ID) {
                         includesDaily = true;
                     }
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/NewLevelManager.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/NewLevelManager.java
index 7aca04a..47ec3a8 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/NewLevelManager.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/NewLevelManager.java
@@ -40,7 +40,8 @@ public class NewLevelManager {
     public static int PRE_SAVES_MIN = 3;
     public static int PRE_SAVES_MAX = 10;
 
-    private final double CHALLENGE_GENERATION_PROBABILITY = 0.9;
+    private final double CHALLENGE_GENERATION_PROBABILITY = 0.25;
+    private final int CHALLENGE_ITERATIONS = 4;
 
 
     public static NewLevelManager getInstance(Context context, SharedPreferences settings) {
@@ -84,16 +85,8 @@ public class NewLevelManager {
     public int[] loadDailySudoku() {
         DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
         String toHash = "Sudoku/.PrivacyFriendly/." + dateFormat.format(new Date());
-        boolean generateChallenge = new Random(toHash.hashCode()).nextDouble() >= CHALLENGE_GENERATION_PROBABILITY;
         QQWingController controller = new QQWingController();
-        int[] result;
-
-        if (generateChallenge) {
-            result = controller.generateFromSeed(toHash.hashCode(), GameDifficulty.Challenge);
-        } else {
-            result = controller.generateFromSeed(toHash.hashCode(), GameDifficulty.Unspecified);
-        }
-        return result;
+        return controller.generateFromSeed(toHash.hashCode(), CHALLENGE_GENERATION_PROBABILITY, CHALLENGE_ITERATIONS);
     }
 
     public int[] loadLevel(GameType type, GameDifficulty diff) {
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/QQWingController.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/QQWingController.java
index eb78863..87a81b1 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/QQWingController.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/QQWingController.java
@@ -4,6 +4,7 @@ import android.os.Parcelable;
 import android.util.Log;
 
 import java.util.LinkedList;
+import java.util.Random;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.Date;
@@ -53,20 +54,27 @@ public class QQWingController {
         return generated;
     }
 
-    public int[] generateFromSeed(int seed, GameDifficulty difficulty) {
+    public int[] generateFromSeed(int seed) {
+        return generateFromSeed(seed, 1, 1);
+    }
+
+    public int[] generateFromSeed(int seed, double challengePermission, int challengeIterations) {
         generated.clear();
         QQWing generator = new QQWing(GameType.Default_9x9, GameDifficulty.Unspecified);
-        boolean havePuzzle = false;
+        boolean continueSearch = true;
+        Random random = new Random(seed);
+        int seedFactor = 2;
 
-        while(!havePuzzle) {
-            seed++;
+        while(continueSearch && challengeIterations > 0) {
+            seed *= seedFactor;
             generator.setRandom(seed);
             generator.setRecordHistory(true);
             generator.generatePuzzle();
 
-            if (difficulty == GameDifficulty.Unspecified && generator.getDifficulty() != GameDifficulty.Challenge
-                    || difficulty == generator.getDifficulty()) {
-                havePuzzle = true;
+            if (generator.getDifficulty() != GameDifficulty.Challenge || random.nextDouble() < challengePermission) {
+                continueSearch = false;
+            } else {
+                challengeIterations--;
             }
         }
 
@@ -223,6 +231,10 @@ public class QQWingController {
         }
     }
 
+    public boolean isImpossible() {
+        return solveImpossible;
+    }
+
     private static class QQWingOptions {
         // defaults for options
         boolean needNow = false;
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/SaveLoadStatistics.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/SaveLoadStatistics.java
index 7819531..b519ace 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/SaveLoadStatistics.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/SaveLoadStatistics.java
@@ -204,12 +204,12 @@ public class SaveLoadStatistics implements ITimerListener, IHintListener {
 
     @Override
     public void onTick(int time) {
-        incTime(gc.getDifficulty(), gc.getGameType());
+        if (!gc.gameIsCustom()) incTime(gc.getDifficulty(), gc.getGameType());
         //gc.getUsedHints();
     }
 
     @Override
     public void onHintUsed() {
-        incHints(gc.getDifficulty(),gc.getGameType());
+        if (!gc.gameIsCustom()) incHints(gc.getDifficulty(),gc.getGameType());
     }
 }
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/helper/GameInfoContainer.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/helper/GameInfoContainer.java
index 9365a39..79cc687 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/helper/GameInfoContainer.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/controller/helper/GameInfoContainer.java
@@ -25,6 +25,7 @@ public class GameInfoContainer {
     int[] setValues;
     boolean[][] setNotes;
     int hintsUsed;
+    boolean isCustom;
 
     public GameInfoContainer() {}
     public GameInfoContainer(int ID, GameDifficulty difficulty, GameType gameType, int[] fixedValues, int[] setValues, boolean[][] setNotes) {
@@ -40,12 +41,17 @@ public class GameInfoContainer {
         this.setValues = setValues;
         this.setNotes = setNotes;
         this.hintsUsed = hintsUsed;
+        isCustom = false;
     }
 
     public void setID(int ID) {
         this.ID = ID;
     }
 
+    public void setCustom (boolean isCustom) { this.isCustom = isCustom; }
+
+    public boolean isCustom () { return  isCustom; }
+
     public void parseGameType(String s) {
         gameType = Enum.valueOf(GameType.class, s);
         if(gameType == null) {
@@ -179,6 +185,7 @@ public class GameInfoContainer {
     public static String getGameInfo(GameController controller) {
         StringBuilder sb = new StringBuilder();
         Date today = new Date();
+        boolean custom = controller.gameIsCustom();
 
         sb.append(controller.getGameType().name());
         sb.append("/");
@@ -196,6 +203,11 @@ public class GameInfoContainer {
         sb.append("/");
         sb.append(controller.getUsedHints());
 
+        if (custom) {
+            sb.append("/");
+            sb.append(custom);
+        }
+
         String result = sb.toString();
 
         Log.d("getGameInfo", result);
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/CreateSudokuActivity.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/CreateSudokuActivity.java
index d1603ec..8fc014f 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/CreateSudokuActivity.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/CreateSudokuActivity.java
@@ -131,6 +131,7 @@ public class CreateSudokuActivity extends BaseActivity implements IFinalizeDialo
             Toast.makeText(CreateSudokuActivity.this, R.string.finished_verifying_custom_sudoku_toast, Toast.LENGTH_LONG).show();
             final Intent intent = new Intent(this, GameActivity.class);
             intent.setData(Uri.parse(GameActivity.URL_SCHEME_WITHOUT_HOST + "://" + boardContent));
+            intent.putExtra("isCustom", true);
             startActivity(intent);
             finish();
         } else {
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java
index dcc5976..2316cda 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java
@@ -140,6 +140,7 @@ public class GameActivity extends BaseActivity implements NavigationView.OnNavig
                 QQWing difficultyCheck;
                 GameInfoContainer container = new GameInfoContainer(0, GameDifficulty.Unspecified,
                         GameType.Unspecified, new int [boardSize], new int [boardSize], new boolean [boardSize][sectionSize]);
+                container.setCustom(extras.getBoolean("isCustom", false));
 
                 try {
                     container.parseGameType("Default_" + sectionSize + "x" + sectionSize);
@@ -149,8 +150,9 @@ public class GameActivity extends BaseActivity implements NavigationView.OnNavig
                     difficultyCheck.setPuzzle(container.getFixedValues());
                     difficultyCheck.solve();
 
-                    startGame = difficultyCheck.hasUniqueSolution();
                     container.parseDifficulty(difficultyCheck.getDifficulty().toString());
+                    startGame = difficultyCheck.hasUniqueSolution();
+
 
                 } catch (IllegalArgumentException e) {
                     startGame = false;
@@ -487,12 +489,19 @@ public class GameActivity extends BaseActivity implements NavigationView.OnNavig
             editor.apply();
         }
 
-        //Show time hints new plus old best time
+        //Don't save statistics if game is custom
+        boolean isNewBestTime;
 
-        statistics.saveGameStats();
+        if (!gameController.gameIsCustom()) {
+            //Show time hints new plus old best time
+            statistics.saveGameStats();
+            isNewBestTime = gameController.getUsedHints() == 0
+                    && statistics.loadStats(gameController.getGameType(),gameController.getDifficulty()).getMinTime() >= gameController.getTime();
+
+        } else {
+            isNewBestTime = false;
+        }
 
-        boolean isNewBestTime = gameController.getUsedHints() == 0
-                && statistics.loadStats(gameController.getGameType(),gameController.getDifficulty()).getMinTime() >= gameController.getTime();
 
         dialog = new WinDialog(this, R.style.WinDialog , timeToString(gameController.getTime()), String.valueOf(gameController.getUsedHints()), isNewBestTime);
 
diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
index c46dfd8..566ad3b 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
@@ -388,6 +388,7 @@ public class MainActivity extends BaseActivity implements NavigationView.OnNavig
             case R.id.nav_dailySudoku_main:
                 intent = new Intent(this, DailySudokuActivity.class);
                 startActivity(intent);
+                overridePendingTransition(0, 0);
                 break;
 
             default:
@@ -409,7 +410,7 @@ public class MainActivity extends BaseActivity implements NavigationView.OnNavig
         boolean solvable = CreateSudokuActivity.verify(MainActivity.this, GameType.Default_9x9, input);
         if (solvable) {
             Toast.makeText(MainActivity.this, R.string.finished_verifying_custom_sudoku_toast, Toast.LENGTH_LONG).show();
-            final Intent intent = new Intent(this, MainActivity.class);
+            final Intent intent = new Intent(this, GameActivity.class);
             intent.setData(Uri.parse(GameActivity.URL_SCHEME_WITHOUT_HOST + "://" + input));
             startActivity(intent);
             finish();
diff --git a/app/src/main/res/layout/activity_daily_sudoku.xml b/app/src/main/res/layout/activity_daily_sudoku.xml
index 13f345c..73322b0 100644
--- a/app/src/main/res/layout/activity_daily_sudoku.xml
+++ b/app/src/main/res/layout/activity_daily_sudoku.xml
@@ -1,249 +1,233 @@
 <?xml version="1.0" encoding="utf-8"?>
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+<androidx.drawerlayout.widget.DrawerLayout android:id="@+id/drawer_layout_main"
+    android:layout_height="match_parent"
+    android:layout_width="match_parent"
+    android:fitsSystemWindows="true"
+    tools:openDrawer="start"
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/linearLayout5"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+<androidx.constraintlayout.widget.ConstraintLayout
+    android:id="@+id/linearLayout10"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fitsSystemWindows="true"
     app:statusBarBackground="?attr/colorPrimary">
 
-    <LinearLayout
-        android:id="@+id/linearLayout6"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:orientation="vertical"
-        app:layout_constraintBottom_toTopOf="@+id/main_content"
+    <View
+        android:id="@+id/view3"
+        android:layout_width="0dp"
+        android:layout_height="2dp"
+        android:layout_centerHorizontal="true"
+        android:layout_centerVertical="true"
+        android:layout_gravity="center_vertical"
+        android:background="?attr/colorPrimary"
+        android:foregroundGravity="center_vertical"
+        android:layout_marginStart="16dp"
+        android:layout_marginLeft="16dp"
+        android:layout_marginEnd="16dp"
+        android:layout_marginRight="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent">
+        app:layout_constraintTop_toBottomOf="@+id/appbar" />
 
-        <com.google.android.material.appbar.AppBarLayout
-            android:id="@+id/appbar"
-            android:layout_width="match_parent"
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/linearLayout11"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="8dp"
+        android:weightSum="5"
+        app:layout_constraintBottom_toTopOf="@+id/view3"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/appbar">
+
+
+        <ImageView
+            android:id="@+id/statistic_image"
+            android:layout_width="0dp"
             android:layout_height="wrap_content"
-            android:clipChildren="false"
-            android:theme="@style/AppTheme.AppBarOverlay">
+            android:layout_marginStart="16dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginEnd="16dp"
+            android:layout_marginRight="16dp"
+            android:adjustViewBounds="true"
+            android:src="@drawable/icon_default_9x9"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@id/view"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.25" />
 
-            <androidx.appcompat.widget.Toolbar
-                android:id="@+id/toolbar"
-                android:layout_width="match_parent"
-                android:layout_height="?attr/actionBarSize"
-                android:background="?attr/colorPrimary"
-                android:clipChildren="false"
-                app:layout_scrollFlags="enterAlways"
-                app:popupTheme="@style/AppTheme.PopupOverlay">
 
-            </androidx.appcompat.widget.Toolbar>
+        <RatingBar
+            android:id="@+id/first_diff_bar"
+            style="?android:attr/ratingBarStyleSmall"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
 
-        </com.google.android.material.appbar.AppBarLayout>
+            android:layout_marginEnd="8dp"
+            android:layout_marginRight="8dp"
+            android:numStars="4"
+            android:scaleX="1.5"
+            android:scaleY="1.5"
+            app:layout_constraintBottom_toBottomOf="@+id/view"
+            app:layout_constraintEnd_toEndOf="@+id/statistic_image"
+            app:layout_constraintStart_toStartOf="@+id/statistic_image"
+            app:layout_constraintTop_toBottomOf="@+id/statistic_image"
+            app:layout_constraintVertical_bias="0.75" />
 
-        <LinearLayout
+        <TextView
+            android:id="@+id/first_diff_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:gravity="center|center_horizontal"
+            android:text="diffi"
+            android:textSize="22sp"
+            app:layout_constraintBottom_toTopOf="@+id/first_diff_bar"
+            app:layout_constraintEnd_toEndOf="@+id/first_diff_bar"
+            app:layout_constraintStart_toStartOf="@+id/first_diff_bar"
+            app:layout_constraintTop_toBottomOf="@+id/statistic_image"
+            app:layout_constraintVertical_bias="1.0" />
+
+
+        <View
+            android:id="@+id/view"
+            android:layout_width="1dp"
+            android:layout_height="wrap_content"
+            android:background="?attr/colorPrimary"
+            android:foregroundGravity="center_vertical"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+
+        <TextView
+            android:id="@+id/textView4"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/daily_number_of_hints"
+            app:layout_constraintBottom_toBottomOf="@+id/statistic_image"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.25"
+            app:layout_constraintStart_toStartOf="@id/view"
+            app:layout_constraintTop_toTopOf="@+id/statistic_image"
+            app:layout_constraintVertical_bias="0.0" />
+
+        <TextView
+            android:id="@+id/numb_of_hints"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="0"
+            app:layout_constraintBottom_toBottomOf="@+id/statistic_image"
+            app:layout_constraintEnd_toEndOf="@+id/textView4"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="@+id/textView4"
+            app:layout_constraintTop_toBottomOf="@+id/textView4"
+            app:layout_constraintVertical_bias="0.0" />
+
+        <TextView
+            android:id="@+id/textView5"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/number_of_completed_games"
+            app:layout_constraintBottom_toTopOf="@+id/textView6"
+            app:layout_constraintEnd_toEndOf="@+id/numb_of_hints"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="@+id/numb_of_hints"
+            app:layout_constraintTop_toBottomOf="@+id/textView4" />
+
+        <TextView
+            android:id="@+id/numb_of_total_games"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="0"
+            app:layout_constraintBottom_toBottomOf="@+id/statistic_image"
+            app:layout_constraintEnd_toEndOf="@+id/textView5"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="@+id/textView5"
+            app:layout_constraintTop_toBottomOf="@+id/textView5"
+            app:layout_constraintVertical_bias="0.0" />
+
+        <TextView
+            android:id="@+id/textView6"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/total_of_time"
+            app:layout_constraintBottom_toTopOf="@+id/numb_of_total_time"
+            app:layout_constraintEnd_toEndOf="@+id/numb_of_total_games"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="@+id/numb_of_total_games"
+            app:layout_constraintTop_toTopOf="@+id/statistic_image"
+            app:layout_constraintVertical_bias="1.0" />
+
+        <TextView
+            android:id="@+id/numb_of_total_time"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="0"
+            app:layout_constraintBottom_toBottomOf="@+id/statistic_image"
+            app:layout_constraintEnd_toEndOf="@+id/textView6"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="@+id/textView6"
+            app:layout_constraintTop_toBottomOf="@+id/numb_of_total_games"
+            app:layout_constraintVertical_bias="1.0" />
+
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/appbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:clipChildren="false"
+        android:theme="@style/AppTheme.AppBarOverlay"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.0">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:orientation="vertical"
-            android:paddingLeft="@dimen/activity_horizontal_margin"
-            android:paddingTop="@dimen/activity_vertical_margin"
-            android:paddingRight="@dimen/activity_horizontal_margin"
-            android:paddingBottom="@dimen/activity_vertical_margin"
-            android:weightSum="10"
-            tools:context="org.secuso.privacyfriendlysudoku.ui.StatsActivity$PlaceholderFragment">
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            android:clipChildren="false"
+            app:layout_scrollFlags="enterAlways"
+            app:popupTheme="@style/AppTheme.PopupOverlay">
 
-            <LinearLayout
-                android:layout_width="fill_parent"
-                android:layout_height="0dp"
-                android:layout_weight="10"
-                android:weightSum="5">
+        </androidx.appcompat.widget.Toolbar>
 
-                <LinearLayout
-                    android:layout_width="0dp"
-                    android:layout_height="fill_parent"
-                    android:layout_weight="2.0"
-                    android:orientation="vertical">
+    </com.google.android.material.appbar.AppBarLayout>
 
-                    <ImageView
-                        android:id="@+id/statistic_image"
-                        android:layout_width="match_parent"
-                        android:layout_height="fill_parent"
-                        android:layout_gravity="center_horizontal"
-                        android:layout_weight="1.0"
-                        android:adjustViewBounds="true"
-                        android:src="@drawable/icon_default_9x9" />
-
-                    <RelativeLayout
-                        android:layout_width="match_parent"
-                        android:layout_height="match_parent"
-                        android:layout_weight="2.5"
-                        android:gravity="center_horizontal">
-
-                        <RatingBar
-                            android:id="@+id/first_diff_bar"
-                            style="?android:attr/ratingBarStyleSmall"
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_below="@+id/first_diff_text"
-                            android:layout_alignParentBottom="true"
-                            android:layout_centerHorizontal="true"
-                            android:layout_gravity="center_horizontal"
-                            android:layout_marginLeft="10dp"
-                            android:layout_marginTop="5dp"
-
-                            android:layout_marginRight="10dp"
-                            android:layout_marginBottom="10dp"
-                            android:numStars="4"
-                            android:scaleX="1.5"
-                            android:scaleY="1.5" />
-
-                        <TextView
-                            android:id="@+id/first_diff_text"
-                            android:layout_width="fill_parent"
-                            android:layout_height="wrap_content"
-                            android:layout_centerHorizontal="true"
-                            android:gravity="center|center_horizontal"
-                            android:text="diffi"
-                            android:textSize="22sp" />
-                    </RelativeLayout>
-
-                </LinearLayout>
-
-                <RelativeLayout
-                    android:layout_width="wrap_content"
-                    android:layout_height="match_parent"
-                    android:layout_weight="1"
-                    android:minHeight="5dp">
-
-                    <View
-                        android:layout_width="1dp"
-                        android:layout_height="match_parent"
-                        android:layout_alignParentBottom="true"
-                        android:layout_centerHorizontal="true"
-                        android:layout_gravity="center_vertical"
-                        android:layout_marginTop="0dp"
-                        android:layout_marginBottom="50dp"
-                        android:background="?attr/colorPrimary"
-                        android:foregroundGravity="center_vertical" />
-
-                </RelativeLayout>
-
-                <LinearLayout
-                    android:layout_width="2dp"
-                    android:layout_height="match_parent"
-                    android:layout_weight="2"
-                    android:orientation="vertical"
-                    android:paddingTop="0dp"
-                    android:weightSum="6">
-
-                    <LinearLayout
-                        android:layout_width="fill_parent"
-                        android:layout_height="fill_parent"
-                        android:layout_gravity="top"
-                        android:layout_marginRight="0dp"
-                        android:layout_marginBottom="10dp"
-                        android:layout_weight="1"
-                        android:orientation="vertical"
-                        android:paddingTop="0dp"
-                        android:weightSum="10">
-
-                        <TextView
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_marginBottom="0dp"
-                            android:layout_weight="2"
-                            android:text="@string/daily_number_of_hints" />
-
-                        <TextView
-                            android:id="@+id/numb_of_hints"
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_marginBottom="0dp"
-                            android:layout_weight="1"
-                            android:text="0" />
-
-                        <TextView
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_weight="2"
-                            android:gravity="center"
-                            android:text="@string/number_of_completed_games" />
-
-                        <TextView
-                            android:id="@+id/numb_of_total_games"
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_weight="1"
-                            android:text="0" />
-
-                        <TextView
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_weight="2"
-                            android:text="@string/total_of_time" />
-
-                        <TextView
-                            android:id="@+id/numb_of_total_time"
-                            android:layout_width="wrap_content"
-                            android:layout_height="wrap_content"
-                            android:layout_gravity="center"
-                            android:layout_weight="1"
-                            android:text="0" />
-                    </LinearLayout>
-
-                    <LinearLayout
-                        android:layout_width="match_parent"
-                        android:layout_height="300dp"
-                        android:orientation="vertical"
-                        android:paddingTop="@dimen/activity_horizontal_margin"
-                        android:weightSum="6">
-
-                    </LinearLayout>
-
-
-                </LinearLayout>
-            </LinearLayout>
-
-            <LinearLayout
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_weight="1.0">
-
-                <View
-                    android:layout_width="wrap_content"
-                    android:layout_height="2dp"
-                    android:layout_centerHorizontal="true"
-                    android:layout_centerVertical="true"
-                    android:layout_gravity="center_vertical"
-                    android:background="?attr/colorPrimary"
-                    android:foregroundGravity="center_vertical" />
-
-            </LinearLayout>
-
-            <ListView
-                android:id="@+id/sudoku_list"
-                android:layout_width="fill_parent"
-                android:layout_height="270dp"
-                android:layout_weight="6" />
-
-
-        </LinearLayout>
-
-    </LinearLayout>
+    <ListView
+        android:id="@+id/sudoku_list"
+        android:layout_width="fill_parent"
+        android:layout_height="0dp"
+        android:layout_weight="6"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/view3" />
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/floatingActionButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="20dp"
-        android:layout_marginRight="25dp"
-        android:layout_marginBottom="290dp"
         android:clickable="true"
         android:onClick="onClick"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/view3"
+        app:layout_constraintEnd_toEndOf="@+id/view3"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/appbar"
+        app:layout_constraintVertical_bias="0.95"
         app:srcCompat="@android:drawable/ic_media_play" />
 
 
@@ -253,10 +237,12 @@
         android:layout_height="0dp"
         app:layout_behavior="@string/appbar_scrolling_view_behavior"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="@+id/linearLayout6"
-        app:layout_constraintTop_toBottomOf="@+id/linearLayout6" >
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="parent">
 
     </androidx.viewpager.widget.ViewPager>
 
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
+</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.drawerlayout.widget.DrawerLayout>
\ No newline at end of file