diff --git a/.gitignore b/.gitignore
index a44b021..323576f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,8 +39,11 @@ gradle-app.setting
 ## IntelliJ
 ##############################
 out/
-.idea/
+workspace.xml
+usage.statistics.xml
+shelf/
 .idea_modules/
+.idea/modules.xml
 *.iml
 *.ipr
 *.iws
diff --git a/.idea/libraries/google_guava.xml b/.idea/libraries/google_guava.xml
new file mode 100644
index 0000000..49f14b8
--- /dev/null
+++ b/.idea/libraries/google_guava.xml
@@ -0,0 +1,10 @@
+<component name="libraryTable">
+  <library name="google.guava" type="repository">
+    <properties maven-id="com.google.guava:guava:15.0" />
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/com/google/guava/guava/15.0/guava-15.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
deleted file mode 100644
index 9f84a1a..0000000
--- a/.idea/workspace.xml
+++ /dev/null
@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="AutoImportSettings">
-    <option name="autoReloadType" value="SELECTIVE" />
-  </component>
-  <component name="ChangeListManager">
-    <list default="true" id="997b32da-b4d4-48ac-ab51-52d65f364f81" name="Changes" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/Main.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/UI/GameSelectorWindow.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/UI/GameSelectorWindow.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/UI/UIGameBoard.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/UI/UIGameBoard.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/ServerManager.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/ServerManager.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/ParsedCommand.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/ParsedCommand.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/TicTacToeServer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/TicTacToeServer.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/TicTacToeServerCommand.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/toop/server/backend/tictactoe/TicTacToeServerCommand.java" afterDir="false" />
-    </list>
-    <option name="SHOW_DIALOG" value="false" />
-    <option name="HIGHLIGHT_CONFLICTS" value="true" />
-    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
-    <option name="LAST_RESOLUTION" value="IGNORE" />
-  </component>
-  <component name="FileTemplateManagerImpl">
-    <option name="RECENT_TEMPLATES">
-      <list>
-        <option value="Class" />
-      </list>
-    </option>
-  </component>
-  <component name="Git.Settings">
-    <option name="RECENT_BRANCH_BY_REPOSITORY">
-      <map>
-        <entry key="$PROJECT_DIR$" value="Ticho" />
-      </map>
-    </option>
-    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
-  </component>
-  <component name="GitHubPullRequestSearchHistory">{
-  &quot;lastFilter&quot;: {}
-}</component>
-  <component name="GitHubPullRequestState">{
-  &quot;prStates&quot;: [
-    {
-      &quot;id&quot;: {
-        &quot;id&quot;: &quot;PR_kwDOPslbWM6pHd-p&quot;,
-        &quot;number&quot;: 25
-      },
-      &quot;lastSeen&quot;: 1758130713799
-    }
-  ]
-}</component>
-  <component name="GithubPullRequestsUISettings">{
-  &quot;selectedUrlAndAccountId&quot;: {
-    &quot;url&quot;: &quot;git@github.com:2OOP/pism_ttt.git&quot;,
-    &quot;accountId&quot;: &quot;7694f583-f911-4763-8185-8ea3ed608804&quot;
-  }
-}</component>
-  <component name="KubernetesApiPersistence">{}</component>
-  <component name="KubernetesApiProvider">{
-  &quot;isMigrated&quot;: true
-}</component>
-  <component name="ProjectColorInfo">{
-  &quot;customColor&quot;: &quot;&quot;,
-  &quot;associatedIndex&quot;: 1
-}</component>
-  <component name="ProjectId" id="32pVUB4kZJjWp5yY5oJOqsrZhDL" />
-  <component name="ProjectViewState">
-    <option name="hideEmptyMiddlePackages" value="true" />
-    <option name="showLibraryContents" value="true" />
-  </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "Application.Main.executor": "Run",
-    "ModuleVcsDetector.initialDetectionPerformed": "true",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "RunOnceActivity.TerminalTabsStorage.copyFrom.TerminalArrangementManager": "true",
-    "RunOnceActivity.git.unshallow": "true",
-    "UI_DESIGNER_EDITOR_MODE.PaletteManager.STATE": "right",
-    "UI_DESIGNER_EDITOR_MODE.UIDesignerToolWindowManager.STATE": "left",
-    "UI_DESIGNER_EDITOR_MODE.UIDesignerToolWindowManager.WIDTH": "421",
-    "git-widget-placeholder": "#25 on Ticho",
-    "node.js.detected.package.eslint": "true",
-    "node.js.detected.package.tslint": "true",
-    "node.js.selected.package.eslint": "(autodetect)",
-    "node.js.selected.package.tslint": "(autodetect)",
-    "nodejs_package_manager_path": "npm",
-    "settings.editor.selected.configurable": "preferences.editor",
-    "vue.rearranger.settings.migration": "true"
-  }
-}]]></component>
-  <component name="RunManager">
-    <configuration name="Main" type="Application" factoryName="Application" nameIsGenerated="true">
-      <option name="MAIN_CLASS_NAME" value="org.toop.Main" />
-      <module name="pis" />
-      <extension name="coverage">
-        <pattern>
-          <option name="PATTERN" value="org.toop.*" />
-          <option name="ENABLED" value="true" />
-        </pattern>
-      </extension>
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
-    </configuration>
-  </component>
-  <component name="SharedIndexes">
-    <attachedChunks>
-      <set>
-        <option value="bundled-jdk-9823dce3aa75-fbdcb00ec9e3-intellij.indexing.shared.core-IU-251.26927.53" />
-        <option value="bundled-js-predefined-d6986cc7102b-09060db00ec0-JavaScript-IU-251.26927.53" />
-      </set>
-    </attachedChunks>
-  </component>
-  <component name="TaskManager">
-    <task active="true" id="Default" summary="Default task">
-      <changelist id="997b32da-b4d4-48ac-ab51-52d65f364f81" name="Changes" comment="" />
-      <created>1758117514311</created>
-      <option name="number" value="Default" />
-      <option name="presentableId" value="Default" />
-      <updated>1758117514311</updated>
-      <workItem from="1758117515668" duration="8923000" />
-    </task>
-    <task id="LOCAL-00001">
-      <option name="closed" value="true" />
-      <created>1758131224799</created>
-      <option name="number" value="00001" />
-      <option name="presentableId" value="LOCAL-00001" />
-      <option name="project" value="LOCAL" />
-      <updated>1758131224799</updated>
-    </task>
-    <option name="localTasksCounter" value="2" />
-    <servers />
-  </component>
-  <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="3" />
-  </component>
-  <component name="Vcs.Log.Tabs.Properties">
-    <option name="TAB_STATES">
-      <map>
-        <entry key="MAIN">
-          <value>
-            <State />
-          </value>
-        </entry>
-      </map>
-    </option>
-  </component>
-  <component name="XSLT-Support.FileAssociations.UIState">
-    <expand />
-    <select />
-  </component>
-</project>
\ No newline at end of file