diff --git a/.flutter-plugins b/.flutter-plugins
new file mode 100644
index 0000000..74298ec
--- /dev/null
+++ b/.flutter-plugins
@@ -0,0 +1,4 @@
+# This is a generated file; do not edit or check into version control.
+shared_preferences=/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1/
+shared_preferences_macos=/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences_macos-0.0.1+5/
+shared_preferences_web=/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences_web-0.1.2+3/
diff --git a/.flutter-plugins-dependencies b/.flutter-plugins-dependencies
new file mode 100644
index 0000000..4f39f84
--- /dev/null
+++ b/.flutter-plugins-dependencies
@@ -0,0 +1 @@
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"shared_preferences","path":"/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1/","dependencies":[]}],"android":[{"name":"shared_preferences","path":"/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1/","dependencies":[]}],"macos":[{"name":"shared_preferences_macos","path":"/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences_macos-0.0.1+5/","dependencies":[]}],"linux":[],"windows":[],"web":[{"name":"shared_preferences_web","path":"/Users/luna/.pub-cache/hosted/pub.dartlang.org/shared_preferences_web-0.1.2+3/","dependencies":[]}]},"dependencyGraph":[{"name":"shared_preferences","dependencies":["shared_preferences_macos","shared_preferences_web"]},{"name":"shared_preferences_macos","dependencies":[]},{"name":"shared_preferences_web","dependencies":[]}],"date_created":"2020-02-17 18:53:44.391856","version":"1.14.6"}
\ No newline at end of file
diff --git a/.idea/eightQueens.iml b/.idea/eightQueens.iml
index de9fce8..dbfb99b 100644
--- a/.idea/eightQueens.iml
+++ b/.idea/eightQueens.iml
@@ -3,6 +3,9 @@
   <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
       <excludeFolder url="file://$MODULE_DIR$/eight_queens/.dart_tool" />
       <excludeFolder url="file://$MODULE_DIR$/eight_queens/.pub" />
       <excludeFolder url="file://$MODULE_DIR$/eight_queens/build" />
@@ -11,5 +14,6 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="Dart SDK" level="project" />
     <orderEntry type="library" name="Dart Packages" level="project" />
+    <orderEntry type="library" name="Flutter Plugins" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
new file mode 100644
index 0000000..f58978a
--- /dev/null
+++ b/.idea/libraries/Flutter_Plugins.xml
@@ -0,0 +1,10 @@
+<component name="libraryTable">
+  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
+    <CLASSES>
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_web-0.1.2+3" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index c9dbd98..ea4f69c 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,8 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/eightQueens.iml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/eightQueens.iml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/test/eight_test.dart" beforeDir="false" afterPath="$PROJECT_DIR$/test/eight_test.dart" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -19,21 +20,31 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$USER_HOME$/flutter/packages/flutter/lib/src/widgets/framework.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="167">
+            <state relative-caret-position="157">
               <caret line="1020" column="29" selection-start-line="1020" selection-start-column="29" selection-end-line="1020" selection-end-column="29" />
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+        <entry file="file://$PROJECT_DIR$/test/eight_test.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="720">
-              <caret line="57" column="7" selection-start-line="57" selection-start-column="7" selection-end-line="57" selection-end-column="7" />
+            <state relative-caret-position="165">
+              <caret line="11" column="49" selection-start-line="11" selection-start-column="49" selection-end-line="11" selection-end-column="49" />
+              <folding>
+                <element signature="e#0#42#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
       </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/pubspec.yaml">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="-179" />
+          </provider>
+        </entry>
+      </file>
     </leaf>
   </component>
   <component name="Git.Settings">
@@ -49,6 +60,7 @@
         <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
+        <option value="$PROJECT_DIR$/test/eight_test.dart" />
       </list>
     </option>
   </component>
@@ -61,6 +73,7 @@
         <option value="$PROJECT_DIR$/.idea/codeStyles/Project.xml" />
         <option value="$PROJECT_DIR$/.idea/libraries/Dart_SDK.xml" />
         <option value="$PROJECT_DIR$/.idea/libraries/Dart_Packages.xml" />
+        <option value="$PROJECT_DIR$/.idea/libraries/Flutter_Plugins.xml" />
       </list>
     </option>
   </component>
@@ -74,6 +87,8 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
+      <pane id="Scope" />
+      <pane id="PackagesPane" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -84,26 +99,12 @@
             <path>
               <item name="eightQueens" type="b2602c69:ProjectViewProjectNode" />
               <item name="eightQueens" type="462c0819:PsiDirectoryNode" />
-              <item name="eight_queens" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="eightQueens" type="b2602c69:ProjectViewProjectNode" />
-              <item name="eightQueens" type="462c0819:PsiDirectoryNode" />
-              <item name="eight_queens" type="462c0819:PsiDirectoryNode" />
-              <item name="lib" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="eightQueens" type="b2602c69:ProjectViewProjectNode" />
-              <item name="eightQueens" type="462c0819:PsiDirectoryNode" />
-              <item name="eight_queens" type="462c0819:PsiDirectoryNode" />
               <item name="test" type="462c0819:PsiDirectoryNode" />
             </path>
           </expand>
           <select />
         </subPane>
       </pane>
-      <pane id="PackagesPane" />
-      <pane id="Scope" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -125,7 +126,7 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Flutter.main.dart">
+  <component name="RunManager" selected="Flutter Test.Eight Queens algorithm">
     <configuration name="main.dart" type="FlutterRunConfigurationType" factoryName="Flutter" temporary="true" nameIsGenerated="true">
       <option name="filePath" value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
       <method v="2" />
@@ -140,23 +141,23 @@
       <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="My App has an usable textfield" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="My App has an usable textfield" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
+    <configuration name="Eight Queens algorithm" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="Eight Queens algorithm" />
+      <option name="testFile" value="$PROJECT_DIR$/test/eight_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="My App has the desired message" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="My App has the desired message" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
+    <configuration name="count should be 92 on a 8 piece chessboard" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="count should be 92 on a 8 piece chessboard" />
+      <option name="testFile" value="$PROJECT_DIR$/test/eight_test.dart" />
       <method v="2" />
     </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="Flutter Test.Eight Queens algorithm" />
+        <item itemvalue="Flutter Test.count should be 92 on a 8 piece chessboard" />
         <item itemvalue="Flutter.main.dart" />
         <item itemvalue="Flutter Test.App with invalid input wont show results widget" />
         <item itemvalue="Flutter Test.App pushes a new view with results" />
-        <item itemvalue="Flutter Test.My App has an usable textfield" />
-        <item itemvalue="Flutter Test.My App has the desired message" />
       </list>
     </recent_temporary>
   </component>
@@ -174,15 +175,6 @@
     <servers />
   </component>
   <component name="TestHistory">
-    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 34m 50s.xml">
-      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
-    </history-entry>
-    <history-entry file="My_App_has_a_title - 2020.02.17 at 16h 40m 38s.xml">
-      <configuration name="My App has a title" configurationId="FlutterTestConfigType" />
-    </history-entry>
-    <history-entry file="Main_Application_tests - 2020.02.17 at 16h 41m 31s.xml">
-      <configuration name="Main Application tests" configurationId="FlutterTestConfigType" />
-    </history-entry>
     <history-entry file="Main_Application_tests - 2020.02.17 at 16h 41m 42s.xml">
       <configuration name="Main Application tests" configurationId="FlutterTestConfigType" />
     </history-entry>
@@ -204,6 +196,15 @@
     <history-entry file="App_with_invalid_input_wont_show_results_widget - 2020.02.17 at 17h 07m 20s.xml">
       <configuration name="App with invalid input wont show results widget" configurationId="FlutterTestConfigType" />
     </history-entry>
+    <history-entry file="Eight_Queens_algorithm - 2020.02.17 at 18h 54m 03s.xml">
+      <configuration name="Eight Queens algorithm" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="count_should_be_92_on_a_8_piece_chessboard - 2020.02.17 at 18h 55m 14s.xml">
+      <configuration name="count should be 92 on a 8 piece chessboard" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="count_should_be_92_on_a_8_piece_chessboard - 2020.02.17 at 18h 55m 50s.xml">
+      <configuration name="count should be 92 on a 8 piece chessboard" configurationId="FlutterTestConfigType" />
+    </history-entry>
   </component>
   <component name="TodoView">
     <todo-panel id="selected-file">
@@ -220,7 +221,7 @@
     <layout>
       <window_info id="Captures" order="0" weight="0.25" />
       <window_info id="Capture Tool" order="1" />
-      <window_info active="true" content_ui="combo" id="Project" order="2" visible="true" weight="0.16544567" />
+      <window_info content_ui="combo" id="Project" order="2" visible="true" weight="0.16727717" />
       <window_info id="Structure" order="3" side_tool="true" />
       <window_info id="Image Layers" order="4" />
       <window_info id="Designer" order="5" />
@@ -228,12 +229,12 @@
       <window_info id="Favorites" order="7" side_tool="true" />
       <window_info anchor="bottom" id="Dart Analysis" order="0" weight="0.32941177" />
       <window_info anchor="bottom" id="TODO" order="1" weight="0.32941177" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.32941177" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32941177" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.32941177" />
       <window_info anchor="bottom" id="Terminal" order="4" weight="0.32941177" />
       <window_info anchor="bottom" id="Event Log" order="5" side_tool="true" />
       <window_info anchor="bottom" id="Version Control" order="6" weight="0.32941177" />
-      <window_info anchor="bottom" id="Messages" order="7" visible="true" weight="0.32941177" />
+      <window_info anchor="bottom" id="Messages" order="7" weight="0.32941177" />
       <window_info anchor="bottom" id="Find" order="8" />
       <window_info anchor="right" id="Capture Analysis" order="0" />
       <window_info anchor="right" id="Theme Preview" order="1" />
@@ -275,17 +276,32 @@
     <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
     <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart" />
     <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart" />
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="720">
+          <caret line="57" column="7" selection-start-line="57" selection-start-column="7" selection-end-line="57" selection-end-column="7" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$USER_HOME$/flutter/packages/flutter/lib/src/widgets/framework.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="167">
+        <state relative-caret-position="157">
           <caret line="1020" column="29" selection-start-line="1020" selection-start-column="29" selection-end-line="1020" selection-end-column="29" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+    <entry file="file://$PROJECT_DIR$/pubspec.yaml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="720">
-          <caret line="57" column="7" selection-start-line="57" selection-start-column="7" selection-end-line="57" selection-end-column="7" />
+        <state relative-caret-position="-179" />
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test/eight_test.dart">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="165">
+          <caret line="11" column="49" selection-start-line="11" selection-start-column="49" selection-end-line="11" selection-end-column="49" />
+          <folding>
+            <element signature="e#0#42#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
diff --git a/test/eight_test.dart b/test/eight_test.dart
index c95f830..33c8381 100644
--- a/test/eight_test.dart
+++ b/test/eight_test.dart
@@ -1,5 +1,6 @@
 import 'package:eight_queens/queens.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 
 void main() {
@@ -8,11 +9,13 @@ void main() {
   group('Eight Queens algorithm', () {
 
     test('count should be 2 on a 4 piece chessboard', () {
+      SharedPreferences.setMockInitialValues({});
       Future<int> future = QueenResolver().solve(4);
       expect(future,completion(equals(2)));
     });
 
     test('count should be 92 on a 8 piece chessboard', () {
+      SharedPreferences.setMockInitialValues({});
       Future<int> future = QueenResolver().solve(8);
       expect(future,completion(equals(92)));
     });