diff --git a/sources/bin/checkstyle.xml b/sources/bin/checkstyle.xml
deleted file mode 100644
index 546266a..0000000
--- a/sources/bin/checkstyle.xml
+++ /dev/null
@@ -1,204 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE module PUBLIC
-    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
-    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
-
-<!--
-
-  Checkstyle configuration that checks the sun coding conventions from:
-
-    - the Java Language Specification at
-      http://java.sun.com/docs/books/jls/second_edition/html/index.html
-
-    - the Sun Code Conventions at http://java.sun.com/docs/codeconv/
-
-    - the Javadoc guidelines at
-      http://java.sun.com/j2se/javadoc/writingdoccomments/index.html
-
-    - the JDK Api documentation http://java.sun.com/j2se/docs/api/index.html
-
-    - some best practices
-
-  Checkstyle is very configurable. Be sure to read the documentation at
-  http://checkstyle.sf.net (or in your downloaded distribution).
-
-  Most Checks are configurable, be sure to consult the documentation.
-
-  To completely disable a check, just comment it out or delete it from the file.
-
-  Finally, it is worth reading the documentation.
-
--->
-
-<module name="Checker">
-    <!--
-        If you set the basedir property below, then all reported file
-        names will be relative to the specified directory. See
-        http://checkstyle.sourceforge.net/5.x/config.html#Checker
-
-        <property name="basedir" value="${basedir}"/>
-    -->
-
-    <!-- Checks whether files end with a new line.                        -->
-    <!-- See http://checkstyle.sf.net/config_misc.html#NewlineAtEndOfFile -->
-    <!-- <module name="NewlineAtEndOfFile"/> -->
-
-    <!-- Checks that property files contain the same keys.         -->
-    <!-- See http://checkstyle.sf.net/config_misc.html#Translation -->
-    <module name="Translation"/>
-
-    <!-- Checks for Size Violations.                    -->
-    <!-- See http://checkstyle.sf.net/config_sizes.html -->
-    <module name="FileLength"/>
-
-    <!-- Checks for whitespace                               -->
-    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-    <module name="FileTabCharacter"/>
-
-    <!-- Miscellaneous other checks.                   -->
-    <!-- See http://checkstyle.sf.net/config_misc.html -->
-    <!--
-    <module name="RegexpSingleline">
-       <property name="format" value="\s+$"/>
-       <property name="minimum" value="0"/>
-       <property name="maximum" value="0"/>
-       <property name="message" value="Line has trailing spaces."/>
-    </module>
-    -->
-
-    <module name="LineLength">
-        <property name="ignorePattern" value="^.*//#.*|^.* \* @see .*|^import .*"/>
-        <property name="max" value="100"/>
-    </module>
-
-    <module name="TreeWalker">
-
-        <!-- Checks for Javadoc comments.                     -->
-        <!-- See http://checkstyle.sf.net/config_javadoc.html -->
-        <module name="JavadocMethod"/>
-        <module name="JavadocType"/>
-        <module name="JavadocVariable">
-          <property name="scope" value="public"/>
-        </module>
-        <module name="JavadocStyle"/>
-
-
-        <!-- Checks for Naming Conventions.                  -->
-        <!-- See http://checkstyle.sf.net/config_naming.html -->
-        <module name="ConstantName"/>
-        <module name="LocalFinalVariableName"/>
-        <module name="LocalVariableName"/>
-        <module name="MemberName"/>
-        <module name="MethodName"/>
-        <module name="PackageName">
-          <property name="format" value="^[a-z][a-z0-9_]+(\.[a-z][a-z0-9_]*)*$"/>
-        </module>
-        <module name="ParameterName"/>
-        <module name="StaticVariableName"/>
-        <module name="TypeName"/>
-
-
-        <!-- Checks for Headers                                -->
-        <!-- See http://checkstyle.sf.net/config_header.html   -->
-        <!-- <module name="Header">                            -->
-            <!-- The follow property value demonstrates the ability     -->
-            <!-- to have access to ANT properties. In this case it uses -->
-            <!-- the ${basedir} property to allow Checkstyle to be run  -->
-            <!-- from any directory within a project. See property      -->
-            <!-- expansion,                                             -->
-            <!-- http://checkstyle.sf.net/config.html#properties        -->
-            <!-- <property                                              -->
-            <!--     name="headerFile"                                  -->
-            <!--     value="${basedir}/java.header"/>                   -->
-        <!-- </module> -->
-
-        <!-- Following interprets the header file as regular expressions. -->
-        <!-- <module name="RegexpHeader"/>                                -->
-
-
-        <!-- Checks for imports                              -->
-        <!-- See http://checkstyle.sf.net/config_import.html -->
-        <module name="AvoidStarImport"/>
-        <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
-        <module name="RedundantImport"/>
-        <module name="UnusedImports"/>
-
-
-        <!-- Checks for Size Violations.                    -->
-        <!-- See http://checkstyle.sf.net/config_sizes.html -->
-        <module name="MethodLength">
-            <property name="countEmpty" value="false"/>
-        </module>
-        <module name="ParameterNumber"/>
-
-
-        <!-- Checks for whitespace                               -->
-        <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-        <module name="EmptyForIteratorPad"/>
-        <module name="GenericWhitespace"/>
-        <module name="MethodParamPad"/>
-        <module name="NoWhitespaceAfter">
-          <property name="tokens" value="AT, INC, DEC, UNARY_MINUS, UNARY_PLUS, BNOT, LNOT, DOT, ARRAY_DECLARATOR, INDEX_OP"/>
-        </module>
-        <module name="NoWhitespaceBefore">
-          <property name="tokens" value="COMMA, SEMI, POST_INC, POST_DEC, ELLIPSIS, LABELED_STAT"/>
-        </module>
-        <module name="OperatorWrap"/>
-        <module name="ParenPad"/>
-        <module name="TypecastParenPad"/>
-        <module name="WhitespaceAfter"/>
-        <module name="WhitespaceAround"/>
-
-
-        <!-- Modifier Checks                                    -->
-        <!-- See http://checkstyle.sf.net/config_modifiers.html -->
-        <module name="ModifierOrder"/>
-        <!-- <module name="RedundantModifier"/> -->
-
-
-        <!-- Checks for blocks. You know, those {}'s         -->
-        <!-- See http://checkstyle.sf.net/config_blocks.html -->
-        <module name="AvoidNestedBlocks"/>
-        <module name="EmptyBlock"/>
-        <module name="LeftCurly"/>
-        <module name="NeedBraces"/>
-        <!-- <module name="RightCurly"/> -->
-
-
-        <!-- Checks for common coding problems               -->
-        <!-- See http://checkstyle.sf.net/config_coding.html -->
-        <!-- <module name="AvoidInlineConditionals"/> -->
-        <module name="EmptyStatement"/>
-        <module name="EqualsHashCode"/>
-        <module name="HiddenField">
-          <property name="ignoreConstructorParameter" value="true"/>
-          <property name="ignoreSetter" value="true"/>
-        </module>
-        <module name="IllegalInstantiation"/>
-        <module name="InnerAssignment"/>
-        <module name="MissingSwitchDefault"/>
-        <module name="SimplifyBooleanExpression"/>
-        <module name="SimplifyBooleanReturn"/>
-
-        <!-- Checks for class design                         -->
-        <!-- See http://checkstyle.sf.net/config_design.html -->
-        <!-- <module name="DesignForExtension"/> -->
-        <module name="FinalClass"/>
-        <!-- <module name="HideUtilityClassConstructor"/> -->
-        <module name="InterfaceIsType"/>
-        <module name="VisibilityModifier">
-          <property name="protectedAllowed" value="true"/>
-          <property name="packageAllowed" value="true"/>
-        </module>
-
-
-        <!-- Miscellaneous other checks.                   -->
-        <!-- See http://checkstyle.sf.net/config_misc.html -->
-        <module name="ArrayTypeStyle"/>
-        <!-- <module name="FinalParameters"/> -->
-        <module name="TodoComment"/>
-        <module name="UpperEll"/>
-
-    </module>
-
-</module>
diff --git a/sources/bin/pmd.xml b/sources/bin/pmd.xml
deleted file mode 100644
index f004da7..0000000
--- a/sources/bin/pmd.xml
+++ /dev/null
@@ -1,60 +0,0 @@
-<?xml version="1.0"?>
-
-<ruleset name="Custom Rules"
-         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
-
-    <description>
-        My custom rules
-    </description>
-
-    <rule ref="category/java/bestpractices.xml/AccessorClassGeneration"/>
-
-
-    <!-- <rule ref="category/java/bestpractices.xml/AvoidMessageDigestField"/> -->
-
-
-    <rule ref="category/java/bestpractices.xml/AvoidReassigningCatchVariables"/>
-    <rule ref="category/java/bestpractices.xml/AvoidReassigningLoopVariables"/>
-    <rule ref="category/java/bestpractices.xml/AvoidReassigningParameters"/>
-    <rule ref="category/java/bestpractices.xml/AvoidStringBufferField"/>
-    <rule ref="category/java/bestpractices.xml/AvoidUsingHardCodedIP"/>
-    <rule ref="category/java/bestpractices.xml/CheckResultSet"/>
-    <rule ref="category/java/bestpractices.xml/ConstantsInInterface"/>
-    <rule ref="category/java/bestpractices.xml/DefaultLabelNotLastInSwitch"/>
-    <rule ref="category/java/bestpractices.xml/DoubleBraceInitialization"/>
-    <rule ref="category/java/bestpractices.xml/ForLoopCanBeForeach"/>
-    <rule ref="category/java/bestpractices.xml/ForLoopVariableCount"/>
-    <rule ref="category/java/bestpractices.xml/GuardLogStatement"/>
-    <rule ref="category/java/bestpractices.xml/JUnit4SuitesShouldUseSuiteAnnotation"/>
-    <rule ref="category/java/bestpractices.xml/UnitTestShouldUseAfterAnnotation"/>
-    <rule ref="category/java/bestpractices.xml/UnitTestShouldUseBeforeAnnotation"/>
-    <rule ref="category/java/bestpractices.xml/UnitTestShouldUseTestAnnotation"/>
-    <rule ref="category/java/bestpractices.xml/JUnit5TestShouldBePackagePrivate"/>
-    <!-- <rule ref="category/java/bestpractices.xml/UnitTestAssertionsShouldIncludeMessage"/> -->
-    <!-- <rule ref="category/java/bestpractices.xml/UnitTestContainsTooManyAsserts"/> -->
-    <!-- <rule ref="category/java/bestpractices.xml/UnitTestShouldIncludeAssert"/> -->
-    <rule ref="category/java/bestpractices.xml/JUnitUseExpected"/>
-    <rule ref="category/java/bestpractices.xml/LiteralsFirstInComparisons"/>
-    <rule ref="category/java/bestpractices.xml/LooseCoupling"/>
-    <rule ref="category/java/bestpractices.xml/MethodReturnsInternalArray"/>
-    <rule ref="category/java/bestpractices.xml/MissingOverride"/>
-    <rule ref="category/java/bestpractices.xml/OneDeclarationPerLine"/>
-    <rule ref="category/java/bestpractices.xml/PreserveStackTrace"/>
-    <rule ref="category/java/bestpractices.xml/PrimitiveWrapperInstantiation"/>
-    <rule ref="category/java/bestpractices.xml/ReplaceEnumerationWithIterator"/>
-    <rule ref="category/java/bestpractices.xml/ReplaceHashtableWithMap"/>
-    <rule ref="category/java/bestpractices.xml/ReplaceVectorWithList"/>
-    <rule ref="category/java/bestpractices.xml/SimplifiableTestAssertion"/>
-    <rule ref="category/java/bestpractices.xml/NonExhaustiveSwitch"/>
-    <rule ref="category/java/bestpractices.xml/UnusedAssignment"/>
-    <rule ref="category/java/bestpractices.xml/UnusedFormalParameter"/>
-    <rule ref="category/java/bestpractices.xml/UnusedLocalVariable"/>
-    <rule ref="category/java/bestpractices.xml/UnusedPrivateField"/>
-    <rule ref="category/java/bestpractices.xml/UnusedPrivateMethod"/>
-    <rule ref="category/java/bestpractices.xml/UseCollectionIsEmpty"/>
-    <rule ref="category/java/bestpractices.xml/UseStandardCharsets"/>
-    <rule ref="category/java/bestpractices.xml/WhileLoopWithLiteralBoolean"/>
-
-</ruleset>
diff --git a/sources/bin/pom.xml b/sources/bin/pom.xml
deleted file mode 100644
index 947ce09..0000000
--- a/sources/bin/pom.xml
+++ /dev/null
@@ -1,159 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>de.hs_mannheim.pr2</groupId>
-  <artifactId>solutions</artifactId>
-  <version>1.0-SNAPSHOT</version>
-  <packaging>jar</packaging>
-
-  <name>PR2 Excercises</name>
-
-  <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>21</maven.compiler.source>
-    <maven.compiler.target>21</maven.compiler.target>
-    <junit.jupiter.version>5.12.2</junit.jupiter.version>
-    <junit.platform.version>1.12.2</junit.platform.version>
-    <pmdVersion>7.13.0</pmdVersion>
-  </properties>
-  <repositories>
-    <repository>
-      <id>jitpack.io</id>
-      <url>https://jitpack.io</url>
-    </repository>
-  </repositories>
-  <build>
-    <defaultGoal>install</defaultGoal>
-    <directory>${basedir}/target</directory>
-    <finalName>${project.artifactId}-${project.version}</finalName>
-    <plugins>
-      <plugin>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.10.1</version>
-      </plugin>
-      <plugin>
-        <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.5.2</version>
-      </plugin>
-      <plugin>
-        <artifactId>maven-failsafe-plugin</artifactId>
-        <version>3.5.2</version>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.6.0</version>
-        <dependencies>
-          <dependency>
-            <groupId>com.puppycrawl.tools</groupId>
-            <artifactId>checkstyle</artifactId>
-            <version>10.4</version>
-          </dependency>
-        </dependencies>
-        <configuration>
-          <configLocation>checkstyle.xml</configLocation>
-          <consoleOutput>true</consoleOutput>
-          <failsOnError>true</failsOnError>
-          <linkXRef>false</linkXRef>
-        </configuration>
-        <executions>
-          <execution>
-            <id>validate</id>
-            <phase>validate</phase>
-            <goals>
-              <goal>check</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-pmd-plugin</artifactId>
-        <version>3.26.0</version>
-        <dependencies>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-core</artifactId>
-            <version>${pmdVersion}</version>
-          </dependency>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-java</artifactId>
-            <version>${pmdVersion}</version>
-          </dependency>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-javascript</artifactId>
-            <version>${pmdVersion}</version>
-          </dependency>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-jsp</artifactId>
-            <version>${pmdVersion}</version>
-          </dependency>
-        </dependencies>
-        <configuration>
-          <rulesets>
-            <ruleset>./pmd.xml</ruleset>
-          </rulesets>
-          <failOnViolation>true</failOnViolation>
-          <printFailingErrors>true</printFailingErrors>
-        </configuration>
-        <executions>
-          <execution>
-            <goals>
-              <goal>check</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
-  </build>
-  <dependencies>
-<!--
-    <dependency>
-      <groupId>de.smits_net.games</groupId>
-      <artifactId>game-framework</artifactId>
-      <version>1.0</version>
-      <scope>compile</scope>
-    </dependency>
--->
-    <dependency>
-	    <groupId>com.github.thomsmits</groupId>
-	    <artifactId> game-framework</artifactId>
-	    <version>v1.0</version>
-	  </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-engine</artifactId>
-      <version>${junit.jupiter.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-api</artifactId>
-      <version>${junit.jupiter.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-params</artifactId>
-      <version>${junit.jupiter.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.platform</groupId>
-      <artifactId>junit-platform-suite</artifactId>
-      <version>${junit.platform.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-      <version>${junit.jupiter.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.jfree</groupId>
-      <artifactId>jfreechart</artifactId>
-      <version>1.5.3</version>
-    </dependency>
-  </dependencies>
-
-</project>