diff --git a/app/build.gradle b/app/build.gradle
index b9acbd6d..363b6dcd 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,7 +7,7 @@ android {
         }
     }
     compileSdkVersion 24
-    buildToolsVersion "24.0.0"
+    buildToolsVersion '25.0.0'
     defaultConfig {
         applicationId "jwtc.android.chess"
         minSdkVersion 11
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index aebf0fbf..c2b488f4 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="jwtc.android.chess"
-      android:versionCode="148"
-      android:versionName="8.8.3"
+      android:versionCode="149"
+      android:versionName="8.8.4"
       android:installLocation="auto"
       >
     <application android:name=".MyApplication" android:icon="@drawable/icon" android:label="@string/app_name"
diff --git a/app/src/main/assets/about-ru.html b/app/src/main/assets/about-ru.html
index 6fb503aa..27999906 100644
--- a/app/src/main/assets/about-ru.html
+++ b/app/src/main/assets/about-ru.html
@@ -19,8 +19,8 @@ <h3>О приложении</h3>
 <p><i>Тим Теннисон</i>: несколько улучшений.</p>
 <p><i>Алессандро Дал Белло, Паоло Страффи</i>: итальянский перевод.</p>
 <p><i>Ильдар Губайдулин</i>: русский перевод.</p>
-<p><i>Марселла De Rosa</i>: Испанские и португальские переводы.</p>
-<p><i>Стан Zheng</i>: Китайский перевод.</p>
+<p><i>Марселья Де Роса</i>: Испанские и португальские переводы.</p>
+<p><i>Стан Чжэн</i>: Китайский перевод.</p>
 
 </body>
 </html>
\ No newline at end of file
diff --git a/app/src/main/assets/help-ru.html b/app/src/main/assets/help-ru.html
index 7e0d5312..7dc43516 100644
--- a/app/src/main/assets/help-ru.html
+++ b/app/src/main/assets/help-ru.html
@@ -23,8 +23,8 @@ <h3>Помощь</h3>
 <p><i>Тим Теннисон</i>: несколько улучшений.</p>
 <p><i>Алессандро Дал Белло, Паоло Страффи</i>: итальянский перевод.</p>
 <p><i>Ильдар Губайдулин</i>: русский перевод.</p>
-<p><i>Марселла De Rosa</i>: Испанские и португальские переводы.</p>
-<p><i>Стан Zheng</i>: Китайский перевод.</p>
+<p><i>Марселья Де Роса</i>: Испанские и португальские переводы.</p>
+<p><i>Стан Чжэн</i>: Китайский перевод.</p>
 
 <h4>Игра</h4>
 <p>Играйте против Android или используйте шахматную доску для анализа игр.
diff --git a/app/src/main/assets/help_practice-ru.html b/app/src/main/assets/help_practice-ru.html
index 289a9d34..fec11c57 100644
--- a/app/src/main/assets/help_practice-ru.html
+++ b/app/src/main/assets/help_practice-ru.html
@@ -15,7 +15,7 @@ <h3>Помощь в тренировке</h3>
 Ваше время и среднее время для каждой позиции указано рядом с доской.<br/>
 Нажмите кнопку 'Показать' для решения.<br/>
 Нажмите кнопку 'Далее', чтобы перейти к следующей позиции.<br/>
-Иногда может быть найдено несколько решений, но приложение принимает только одно их них.
+Иногда может быть найдено несколько решений, но приложение принимает только одно из них.
 </p>
 
 <p>
diff --git a/app/src/main/java/jwtc/android/chess/puzzle/ChessViewPuzzle.java b/app/src/main/java/jwtc/android/chess/puzzle/ChessViewPuzzle.java
index b5e0f27c..57bc2505 100644
--- a/app/src/main/java/jwtc/android/chess/puzzle/ChessViewPuzzle.java
+++ b/app/src/main/java/jwtc/android/chess/puzzle/ChessViewPuzzle.java
@@ -11,6 +11,7 @@
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.ProgressDialog;
+import android.content.res.Resources;
 import android.os.Handler;
 import android.os.Message;
 import android.text.InputType;
@@ -65,7 +66,7 @@ public void handleMessage(Message msg) {
                 _progressDlg.setMessage(_parent.getString(R.string.msg_progress) + String.format(" %d", (_cnt * 100) / _num) + " %");
             } else if (msg.what == 3) {
                 _progressDlg.hide();
-                _tvPuzzleText.setText("An error occured during install");
+                _tvPuzzleText.setText(_parent.getString(R.string.puzzle_error_install));
             }
         }
 
@@ -282,7 +283,7 @@ public void flipBoard() {
     @Override
     protected boolean requestMove(int from, int to) {
         if (_arrPGN.size() <= _jni.getNumBoard() - 1) {
-            setMessage("(position allready solved)");
+            setMessage(_parent.getString(R.string.puzzle_already_solved));
             return super.requestMove(from, to);
         }
         int move = _arrPGN.get(_jni.getNumBoard() - 1)._move;
@@ -307,7 +308,7 @@ protected boolean requestMove(int from, int to) {
             return true;
         } else {
             // check for illegal move
-            setMessage("Move " + Move.toDbgString(theMove) + (checkIsLegalMove(from, to) ? " is not the expected move" : " is an invalid move"));
+            setMessage(Move.toDbgString(theMove) + (checkIsLegalMove(from, to) ? _parent.getString(R.string.puzzle_not_correct_move) : _parent.getString(R.string.puzzle_invalid_move)));
             _imgStatus.setImageResource(R.drawable.indicator_error);
             m_iFrom = -1;
 
@@ -331,7 +332,7 @@ public void play() {
         if (_iPos < 1)
             _iPos = 1;
         if (_iPos > _num) {
-            setMessage("You completed all puzzles!!!");
+            setMessage(_parent.getString(R.string.puzzle_all_completed));
             return;
         }
 
@@ -398,7 +399,7 @@ public boolean handleClick(int index) {
                 final String[] items = _parent.getResources().getStringArray(R.array.promotionpieces);
 
                 AlertDialog.Builder builder = new AlertDialog.Builder(_parent);
-                builder.setTitle("Pick promotion piece");
+                builder.setTitle(_parent.getString(R.string.puzzle_pick_promotion));
                 builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
                     public void onClick(DialogInterface dialog, int item) {
                         dialog.dismiss();
diff --git a/app/src/main/java/jwtc/android/chess/tools/FileListView.java b/app/src/main/java/jwtc/android/chess/tools/FileListView.java
index 28dc0974..ff1f2c0e 100644
--- a/app/src/main/java/jwtc/android/chess/tools/FileListView.java
+++ b/app/src/main/java/jwtc/android/chess/tools/FileListView.java
@@ -9,7 +9,9 @@
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
+import android.os.Environment;
 import android.view.Gravity;
 import android.view.MenuItem;
 import android.view.View;
@@ -38,7 +40,11 @@ public void onCreate(Bundle savedInstanceState) {
      }
     
     private void browseToRoot() {
-		browseTo(new File("/"));
+		String sRoot = "";
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+			sRoot = Environment.getExternalStorageDirectory().toString();
+		}
+		browseTo(new File(sRoot));
     }
     
     @Override
@@ -165,19 +171,20 @@ private void fill(File[] files) {
 					getResources().getDrawable(R.drawable.navigation_previous_item)));
 		}
 		Drawable currentIcon = null;
-		for (File currentFile : files){
-			if (currentFile.canRead() /*&& (_mode == MODE_IMPORT  || _mode == MODE_EXPORT && currentFile.canWrite())*/){
-				if (currentFile.isDirectory()) {
-					currentIcon = getResources().getDrawable(R.drawable.collections_collection);
-					this.directoryEntries.add(new IconifiedText(currentFile.getPath(), currentIcon));
-				}else { 
-					String fileName = currentFile.getName();
-		
-					if(fileNameFilterByMode(fileName))
-					{
-						currentIcon = getResources().getDrawable(R.drawable.navigation_next_item);
+		if(files != null) {
+			for (File currentFile : files) {
+				if (currentFile.canRead() /*&& (_mode == MODE_IMPORT  || _mode == MODE_EXPORT && currentFile.canWrite())*/) {
+					if (currentFile.isDirectory()) {
+						currentIcon = getResources().getDrawable(R.drawable.collections_collection);
 						this.directoryEntries.add(new IconifiedText(currentFile.getPath(), currentIcon));
-					}				
+					} else {
+						String fileName = currentFile.getName();
+
+						if (fileNameFilterByMode(fileName)) {
+							currentIcon = getResources().getDrawable(R.drawable.navigation_next_item);
+							this.directoryEntries.add(new IconifiedText(currentFile.getPath(), currentIcon));
+						}
+					}
 				}
 			}
 		}
diff --git a/app/src/main/java/jwtc/android/chess/tools/pgntool.java b/app/src/main/java/jwtc/android/chess/tools/pgntool.java
index c81bbc1a..22d4e8b6 100644
--- a/app/src/main/java/jwtc/android/chess/tools/pgntool.java
+++ b/app/src/main/java/jwtc/android/chess/tools/pgntool.java
@@ -15,14 +15,19 @@
 import jwtc.chess.PGNColumns;
 import jwtc.chess.algorithm.UCIWrapper;
 
+import android.Manifest;
 import android.app.AlertDialog;
 import android.app.ListActivity;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.database.Cursor;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
 import android.util.Log;
 import android.view.*;
 import android.widget.AdapterView;
@@ -42,6 +47,7 @@ public class pgntool extends ListActivity {
     protected static final String MODE_IMPORT_PRACTICE = "import_practice";
     protected static final String MODE_IMPORT_PUZZLE = "import_puzzle";
     protected static final String MODE_IMPORT_OPENINGDATABASE = "import_openingdatabase";
+    protected static final int MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 1;
 
     protected static final String EXTRA_MODE = "jwtc.android.chess.tools.Mode";
 
@@ -70,6 +76,11 @@ public void onCreate(Bundle savedInstanceState) {
 
             @Override
             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
+
+                if(false == pgntool.this.hasPermission()) {
+                    return;
+                }
+
                 if (arrString[arg2].equals(getString(R.string.pgntool_export_explanation))) {
                     doExport();
 
@@ -271,6 +282,19 @@ public boolean onOptionsItemSelected(MenuItem item) {
         return super.onOptionsItemSelected(item);
     }
 
+    public boolean hasPermission() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                return true;
+            } else {
+                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
+                return false;
+            }
+        } else {
+            return true;
+        }
+    }
+
     public void doExport() {
         try {
             if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
diff --git a/app/src/main/res/layout-land/main.xml b/app/src/main/res/layout-land/main.xml
index 6f7b0c5c..0d7d5707 100644
--- a/app/src/main/res/layout-land/main.xml
+++ b/app/src/main/res/layout-land/main.xml
@@ -2,7 +2,7 @@
 
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	android:layout_width="fill_parent" android:layout_height="fill_parent"
-	android:background="@color/bgColorText" android:gravity="center" android:id="@+id/LayoutMain"
+	android:gravity="center" android:id="@+id/LayoutMain"
 	>
 
 	<RelativeLayout android:id="@+id/LayoutBoard"
@@ -222,7 +222,7 @@
 					android:layout_marginTop="2dp"
 				>
 					<TextView android:id="@+id/TextViewAnnotate"
-						android:background="@android:drawable/editbox_background_normal" android:textColor="#000000"
+						android:background="@android:drawable/editbox_background_normal"
 						android:padding="8dp"
 						android:layout_width="fill_parent" android:layout_height="wrap_content"
 						android:minHeight="80dp"
diff --git a/app/src/main/res/layout-large-land/main.xml b/app/src/main/res/layout-large-land/main.xml
index 8e7735bd..90502aba 100644
--- a/app/src/main/res/layout-large-land/main.xml
+++ b/app/src/main/res/layout-large-land/main.xml
@@ -2,7 +2,7 @@
 
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent" android:layout_height="fill_parent"
-    android:background="@color/bgColorText" android:gravity="center" android:id="@+id/LayoutMain"
+    android:gravity="center" android:id="@+id/LayoutMain"
     >
 
     <RelativeLayout android:id="@+id/LayoutBoard"
@@ -14,7 +14,6 @@
             layout="@layout/board"
             android:layout_width="wrap_content" android:layout_height="wrap_content"
             android:id="@+id/includeboard" />
-
         <!--
       <TextView android:layout_width="@dimen/boardSize" android:layout_height="@dimen/boardSize"
           android:id="@+id/includeboard"
@@ -94,8 +93,7 @@
                 android:layout_height="wrap_content"
                 android:background="@android:drawable/editbox_background_normal"
                 android:minHeight="40dp"
-                android:padding="8dp"
-                android:textColor="#000000" />
+                android:padding="8dp" />
 
         </ScrollView>
 
@@ -135,8 +133,6 @@
 
     </LinearLayout>
 
-
-
     <RelativeLayout android:id="@+id/LayoutRight"
         android:layout_width="wrap_content" android:layout_height="fill_parent"
         android:padding="4dip"
diff --git a/app/src/main/res/layout/main.xml b/app/src/main/res/layout/main.xml
index 3cec714d..a49a9b59 100644
--- a/app/src/main/res/layout/main.xml
+++ b/app/src/main/res/layout/main.xml
@@ -2,9 +2,8 @@
 
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	android:layout_width="fill_parent" android:layout_height="fill_parent"
-	android:background="@color/bgColorText" android:id="@+id/LayoutMain"
+	android:id="@+id/LayoutMain"
 	>
-	
 	 <TableLayout android:id="@+id/LayoutTopTitle" 
 		android:layout_width="fill_parent" android:layout_height="wrap_content"
 		>
@@ -33,7 +32,6 @@
 				android:text="Title..."
 			/>
 		</TableRow>
-			
 	</TableLayout>
 	
 	<include
@@ -209,7 +207,7 @@
 		
 			<HorizontalScrollView android:id="@+id/HScrollViewHistory"
 		    	android:layout_width="fill_parent" android:layout_height="40dip"
-				android:background="@color/bgColorLight" android:textColor="@color/textColor"
+				android:background="@color/bgColorMiddle" android:textColor="@color/textColor"
 				android:padding="2dip"
 			>
 				<RelativeLayout android:id="@+id/LayoutHistory"
@@ -221,14 +219,13 @@
 			<ScrollView android:layout_width="fill_parent" android:layout_height="wrap_content"
 				android:fadingEdge="none" android:padding="2dip"
 			>
-				<TextView android:id="@+id/TextViewAnnotate" 
-					android:background="@android:drawable/editbox_background_normal" android:textColor="#000000"
+				<TextView android:id="@+id/TextViewAnnotate"
+					android:background="@color/bgColorLight" android:textColor="@color/textColorInverse"
 					android:padding="8dip"
 					android:layout_width="fill_parent" android:layout_height="wrap_content" 
 					android:minHeight="50dip"/>
 			</ScrollView>
 
-			
 			<TableLayout android:layout_width="fill_parent" android:layout_height="wrap_content"
 				android:padding="2dip" android:stretchColumns="2"
 			>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 61f1f2cc..4ae178d6 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">Pantalla TV</string>
 
     <string name="globalpreferences">Configuración global</string>
+    <string name="puzzlepreferences">Configuración rompecabezas</string>
+    <string name="playpreferences">Configuración jugar</string>
+    <string name="playonlinepreferences">Configuración línea jugar</string>
     <string name="preferences">Configuración</string>
     <string name="pref_wakelock">Utilice bloqueo modo reposo</string>
     <string name="pref_wakelock_desc">Esto evitará que el teléfono se ponga en modo reposo</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">Editare</string>
     <string name="choice_delete">Eliminar</string>
 
+    <string name="puzzle_error_install">Se produjo un error durante la instalación</string>
+    <string name="puzzle_already_solved">(Posición ya resuelto)</string>
+    <string name="puzzle_not_correct_move"> no es el movimiento esperado</string>
+    <string name="puzzle_invalid_move"> es un movimiento no válido</string>
+    <string name="puzzle_all_completed">Has completado todos los puzzles!!!</string>
+    <string name="puzzle_pick_promotion">Escoja piece la promoción</string>
+
     <string name="color_picker_brightness">Brillo</string>
     <string name="color_picker_light">claro</string>
     <string name="color_picker_dark">oscuro</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index bb65b212..23be4092 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">Schermo TV</string>
 
     <string name="globalpreferences">Preferenze globali</string>
+    <string name="puzzlepreferences">Preferenze Puzzle</string>
+    <string name="playpreferences">Preferenze giocare</string>
+    <string name="playonlinepreferences">Configurazione gioco online</string>
     <string name="preferences">Preferenze</string>
     <string name="pref_wakelock">Usa blocco sospensione</string>
     <string name="pref_wakelock_desc">Impedisce al telefono di andare in sospensione</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">Modifica</string>
     <string name="choice_delete">Cancella</string>
 
+    <string name="puzzle_error_install">Verificato un errore durante l\'installazione</string>
+    <string name="puzzle_already_solved">(Posizione già risolto)</string>
+    <string name="puzzle_not_correct_move"> non è prevista la mossa</string>
+    <string name="puzzle_invalid_move"> è una mossa non valida</string>
+    <string name="puzzle_all_completed">Hai completato tutti i puzzle!!!</string>
+    <string name="puzzle_pick_promotion">Scegli piece Promozione</string>
+
     <string name="color_picker_brightness">Luminosità</string>
     <string name="color_picker_light">chiaro</string>
     <string name="color_picker_dark">scuro</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 2f863397..1578aab5 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">Tela da TV</string>
 
     <string name="globalpreferences">Configuração global</string>
+    <string name="puzzlepreferences">Configuração enigma</string>
+    <string name="playpreferences">Configuração jogar</string>
+    <string name="playonlinepreferences">Configuração jogar online</string>
     <string name="preferences">Configuração</string>
     <string name="pref_wakelock">Use wake lock</string>
     <string name="pref_wakelock_desc">Isso impedirá que o seu teléfono fique em modo repouso</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">Editar</string>
     <string name="choice_delete">Remover</string>
 
+    <string name="puzzle_error_install">Ocorreu um erro durante a instalação</string>
+    <string name="puzzle_already_solved">(Posição já resolvido)</string>
+    <string name="puzzle_not_correct_move"> não é o movimento esperado</string>
+    <string name="puzzle_invalid_move"> é um movimento inválido</string>
+    <string name="puzzle_all_completed">Você completou todos os enigmas!!!</string>
+    <string name="puzzle_pick_promotion">Escolha pedaço promoção</string>
+
     <string name="color_picker_brightness">Brilho</string>
     <string name="color_picker_light">clara</string>
     <string name="color_picker_dark">escura</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 23c0991e..29d66a3f 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">Экран ТВ</string>
 
     <string name="globalpreferences">Глобальные настройки</string>
+    <string name="puzzlepreferences">Настройки головоломок</string>
+    <string name="playpreferences">Настройки игры</string>
+    <string name="playonlinepreferences">Настройки онлайн-игры</string>
     <string name="preferences">Настройки</string>
     <string name="pref_wakelock">Использовать удержание в режиме бодрствования</string>
     <string name="pref_wakelock_desc">Не давать телефону перейти в спящий режим</string>
@@ -69,8 +72,8 @@
     <string name="prefs_icsshowclocksummary">В PGN показывать время на часах для каждого хода</string>
     <string name="pref_icsgamestartsound">Звук при включении</string>
     <string name="pref_icsgamestartsound_desc">Включать звук в начале игры или при потере соединения</string>
-    <string name="pref_icsnotification">Уведомление новой игры</string>
-    <string name="prefs_icsnotificationsummary">Позволяет знать начало игры с иконой</string>
+    <string name="pref_icsnotification">Уведомление о новой игре</string>
+    <string name="prefs_icsnotificationsummary">Позволяет узнать о начале игры с помощью иконки</string>
     <string name="pref_puzzle_show_seekbar">Показывать ползунок поиска</string>
     <string name="pref_puzzle_show_seekbar_desc">Быстрое перемещение между головоломками с помощью ползунка</string>
     <string name="pref_localelanguage">Установить язык</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">Редактировать</string>
     <string name="choice_delete">Удалить</string>
 
+    <string name="puzzle_error_install">Произошла ошибка во время установки</string>
+    <string name="puzzle_already_solved">(Позиция уже решена)</string>
+    <string name="puzzle_not_correct_move"> не предполагается</string>
+    <string name="puzzle_invalid_move"> является недопустимым шагом</string>
+    <string name="puzzle_all_completed">Вы выполнили все головоломки!!!</string>
+    <string name="puzzle_pick_promotion">Pick продвижение кусок</string>
+
     <string name="color_picker_brightness">яркость</string>
     <string name="color_picker_light">светлый</string>
     <string name="color_picker_dark">темный</string>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 5e2abcf1..d3275b51 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">电视屏幕</string>
 
     <string name="globalpreferences">通用设置</string>
+    <string name="puzzlepreferences">配置拼图</string>
+    <string name="playpreferences">游戏配置</string>
+    <string name="playonlinepreferences">在线游戏配置</string>
     <string name="preferences">设置</string>
     <string name="pref_wakelock">禁止休眠</string>
     <string name="pref_wakelock_desc">此设置可以防止手机在对局时进入休眠</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">编辑</string>
     <string name="choice_delete">删除</string>
 
+    <string name="puzzle_error_install">错误发生在安装过程中</string>
+    <string name="puzzle_already_solved">（位置已经解决）</string>
+    <string name="puzzle_not_correct_move"> 不是预期的动</string>
+    <string name="puzzle_invalid_move"> 是一个无效的举动</string>
+    <string name="puzzle_all_completed">你完成了所有的谜题！</string>
+    <string name="puzzle_pick_promotion">挑选一件促销</string>
+
     <string name="color_picker_brightness">亮度</string>
     <string name="color_picker_light">浅</string>
     <string name="color_picker_dark">深</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1779c882..09f3b881 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -24,6 +24,9 @@
     <string name="start_convergence">TV Screen</string>
 
     <string name="globalpreferences">Global settings</string>
+    <string name="puzzlepreferences">Puzzle settings</string>
+    <string name="playpreferences">Play settings</string>
+    <string name="playonlinepreferences">Play online settings</string>
     <string name="preferences">Settings</string>
     <string name="pref_wakelock">Use wake lock</string>
     <string name="pref_wakelock_desc">This will prevent your phone going to sleep</string>
@@ -219,6 +222,13 @@
     <string name="choice_edit">Edit</string>
     <string name="choice_delete">Delete</string>
 
+    <string name="puzzle_error_install">An error occurred during install</string>
+    <string name="puzzle_already_solved">(position already solved)</string>
+    <string name="puzzle_not_correct_move"> is not the expected move</string>
+    <string name="puzzle_invalid_move"> is an invalid move</string>
+    <string name="puzzle_all_completed">You completed all puzzles!!!</string>
+    <string name="puzzle_pick_promotion">Pick promotion piece</string>
+
     <string name="color_picker_brightness">Brightness</string>
     <string name="color_picker_light">Light</string>
     <string name="color_picker_dark">Dark</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index c2cbf281..0ef3c810 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <color name="bgColorText">#ff484848</color><!-- 404040, 333355, 555555 -->
-    <color name="bgColorLight">#ff585858</color>
+    <color name="bgColorLight">#ffcccccc</color>
+    <color name="bgColorMiddle">#ff585858</color>
     <color name="textColor">#ffffffff</color>
+    <color name="textColorInverse">#ff000000</color>
     <color name="textColorDimBlendWhite">#ccffffff</color>
     <color name="textColorPrimary">#ff282828</color>
 
@@ -93,7 +95,7 @@
     	<item name="android:typeface">sans</item>
     	<item name="android:paddingLeft">2dp</item>
     	<item name="android:paddingRight">2dp</item>
-    	<item name="android:textColor">#ffffff</item>
+    	<!--<item name="android:textColor">#ffffff</item>-->
         <item name="android:textSize">14sp</item>
     </style>
     <style name="MyRowTextStyle" parent="@style/MyTextStyle">
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 5260600a..86d9583a 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -8,14 +8,15 @@
         <item name="android:textViewStyle">@style/ChessTextViewStyle</item>
         <item name="android:textAppearance">@style/ChessTextAppearance</item>
         <item name="android:colorPrimary" tools:targetApi="lollipop">@color/textColorPrimary</item>
-
-        <!--   <item name="android:background">@color/textColor</item>
+        <item name="android:windowBackground">@color/bgColorText</item>
+        <item name="android:colorBackground">@color/bgColorText</item>
+        <item name="android:background">@color/bgColorText</item>
         <item name="android:textColor">@color/textColor</item>
-           <item name="android:textColorAlertDialogListItem">@color/textColorDimBlendWhite</item>
-           <item name="android:textColorSecondary">@color/textColorDimBlendWhite</item>
-           <item name="android:textColorHint">@color/textColorDimBlendWhite</item>
-           <item name="android:editTextColor">@color/textColorDimBlendWhite</item>-->
-
+        <item name="android:textColorPrimaryInverse">@color/textColorInverse</item>
+        <item name="android:textColorAlertDialogListItem">@color/textColorDimBlendWhite</item>
+        <item name="android:textColorSecondary">@color/textColorDimBlendWhite</item>
+        <item name="android:textColorHint">@color/textColorDimBlendWhite</item>
+        <item name="android:editTextColor">@color/textColorDimBlendWhite</item>
     </style>
 
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/globalprefs.xml b/app/src/main/res/xml/globalprefs.xml
index 75e41bc6..9277c3bb 100644
--- a/app/src/main/res/xml/globalprefs.xml
+++ b/app/src/main/res/xml/globalprefs.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
      
-     <PreferenceCategory android:title="Global settings">
+     <PreferenceCategory android:title="@string/globalpreferences">
 		 <ListPreference
 			 android:title="@string/pref_localelanguage"
 			 android:summary="@string/pref_localelanguage_desc"
diff --git a/app/src/main/res/xml/icsprefs.xml b/app/src/main/res/xml/icsprefs.xml
index 2c34afa7..8f91bd4d 100644
--- a/app/src/main/res/xml/icsprefs.xml
+++ b/app/src/main/res/xml/icsprefs.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <PreferenceCategory android:title="Play online settings">
+    <PreferenceCategory android:title="@string/playonlinepreferences">
         <CheckBoxPreference
             android:title="@string/pref_icsconfirmmove"
             android:defaultValue="false"
diff --git a/app/src/main/res/xml/mainprefs.xml b/app/src/main/res/xml/mainprefs.xml
index ac254ea3..f249718b 100644
--- a/app/src/main/res/xml/mainprefs.xml
+++ b/app/src/main/res/xml/mainprefs.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <PreferenceCategory android:title="Play settings">
+    <PreferenceCategory android:title="@string/playpreferences">
         <CheckBoxPreference
             android:title="@string/pref_onLoadJumpToLastMove"
             android:defaultValue="false"
diff --git a/app/src/main/res/xml/puzzleprefs.xml b/app/src/main/res/xml/puzzleprefs.xml
index cbda73de..8523eb28 100644
--- a/app/src/main/res/xml/puzzleprefs.xml
+++ b/app/src/main/res/xml/puzzleprefs.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <PreferenceCategory android:title="Puzzle settings">
+    <PreferenceCategory android:title="@string/puzzlepreferences">
         <CheckBoxPreference
             android:title="@string/pref_puzzle_show_seekbar"
             android:defaultValue="true"
diff --git a/build.gradle b/build.gradle
index 93793332..cc4b51fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.3'
+        classpath 'com.android.tools.build:gradle:2.3.0'
         classpath 'com.google.gms:google-services:1.5.0-beta2'
 
     }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a65acfb2..fd8afc79 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Aug 17 00:28:24 MST 2016
+#Tue Aug 15 08:18:07 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip