diff --git a/04_UDEF/MP/main_04_UDEF_e.cpp b/04_UDEF/MP/main_04_UDEF_e.cpp
index 55e2e7f..ad43ea3 100644
--- a/04_UDEF/MP/main_04_UDEF_e.cpp
+++ b/04_UDEF/MP/main_04_UDEF_e.cpp
@@ -9,31 +9,28 @@ public:
     bool evenParity;   // set to true if number of '1' in bitsAsDigits is even, false otherwise
     char bitsAsDigits[bitsPerOctet]{}; // bit values as chars
     BinaryOctet(int x = 0);
-    BinaryOctet& operator=(int const &a);
     BinaryOctet(const BinaryOctet &) = default;
-private:
-    BinaryOctet init(int x);
+    BinaryOctet& operator=(int const &a);
+    const BinaryOctet operator--(int);
 };
 
-BinaryOctet BinaryOctet::init(int x) {
+BinaryOctet::BinaryOctet(int x) {
+    //Alles mit 0 füllen
+    for (char &bitsAsDigit : bitsAsDigits) {
+        bitsAsDigit = '0';
+    }
     int length = static_cast<int>(std::to_string(x).length() * 4);
-    while (x >= 1) {
-        bitsAsDigits[length] = (x % 2 == 0) ? '1' : '0';
+    while (length >= 0) {
+        bitsAsDigits[length-1] = (x % 2 == 0) ? '0' : '1';
+        std::cout << x << " : " << length << " : " << bitsAsDigits[length-1] << std::endl;
         x = x / 2;
         length--;
     }
-
     int i = 0;
     for (char c : bitsAsDigits) {
         if (c == '1') i++;
     }
     evenParity = i % 2 == 0;
-
-    return *this;
-}
-
-BinaryOctet::BinaryOctet(int x) {
-    init(x);
 }
 
 bool operator!=(BinaryOctet a, BinaryOctet b) {
@@ -44,10 +41,10 @@ bool operator!=(BinaryOctet a, BinaryOctet b) {
     return true;
 }
 
-const BinaryOctet operator--(BinaryOctet &id, int) {
+const BinaryOctet BinaryOctet::operator--(const int) {
 
 
-    return id;
+    return *this;
 }
 
 BinaryOctet operator+(BinaryOctet a, BinaryOctet b) {
@@ -61,8 +58,13 @@ BinaryOctet operator+(BinaryOctet a, BinaryOctet b) {
     return result;
 }
 
+BinaryOctet operator+(BinaryOctet a, int b) {
+
+}
+
 BinaryOctet operator/(BinaryOctet a, BinaryOctet b) {
 
+    return a;
 }
 
 BinaryOctet& BinaryOctet::operator=(int const &a) {
@@ -103,14 +105,13 @@ std::ostream& operator<< (std::ostream& os, const BinaryOctet &toBePrinted){
 
 int main(int argc, char **argv) {
     BinaryOctet a = 0b00001111;
-    BinaryOctet b = 0b00000110;
     std::cout << a << std::endl;
-    BinaryOctet c = 00001111;
-    std::cout << c << std::endl;
+    BinaryOctet b = 0b00000110;
+    std::cout << b << std::endl;
     std::cout << new BinaryOctet(5) << std::endl;
     println(a + b);
     std::cout << a + b << std::endl;
     //println("result = ", doCalculation(a,b));
-    //std::cout << "result = " << doCalculation(a,b) << std::endl;
+    std::cout << "result = " << doCalculation(a,b) << std::endl;
     return 0;
 }
diff --git a/05_OO/MP/AnsiConsoleDemo.cpp b/05_OO/MP/AnsiConsoleDemo.cpp
deleted file mode 100644
index f149f11..0000000
--- a/05_OO/MP/AnsiConsoleDemo.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <iostream>
-#include <cmath>
-#include "../../helpers/AnsiConsole.h"
-
-/*
- see
- https://en.wikipedia.org/wiki/ANSI_escape_code
- https://gist.github.com/vratiu/9780109
- https://gist.github.com/RobinMalfait/7881398
- */
-
-
-int main(int argc, char **argv)
-{
-  ansiConsole.clearScreen();
-  // x=1 and y=1 is the upper left corner
-  // x and y are more like column and row
-  ansiConsole.printText(4,4,"Hello, World!");
-
-  // draw a pixel, sort of
-  ansiConsole.printText(3,3,"*");
-  // draw a line
-  for(int i=0;i<10;i++){
-    ansiConsole.printText(2+i,2,"-", Colors::GREEN);
-  }
-  ansiConsole.printText(5,15,"end.");
-
-  return 0;
-}
diff --git a/05_OO/MP/build.sh b/05_OO/MP/build.sh
deleted file mode 100644
index 4237857..0000000
--- a/05_OO/MP/build.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-clang++ -std=c++14 -o shape_main.out -I ../helpers/ shapes_main.cpp ../helpers/AnsiConsole.cpp 
-clang++ -std=c++14 -o ansiConsole.out -I ../helpers/ AnsiConsoleDemo.cpp ../helpers/AnsiConsole.cpp
\ No newline at end of file
diff --git a/05_OO/MP/main_mp4_OO_a_vehicles.cpp b/05_OO/MP/main_mp4_OO_a_vehicles.cpp
deleted file mode 100644
index 9eeac3d..0000000
--- a/05_OO/MP/main_mp4_OO_a_vehicles.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-#include <iostream>
-#include <typeinfo>
-
-
-//======================================
-
-class Vehicle {
-protected:
-    int _numSeats;
-public:
-    Vehicle(int numSeats=0);// may serve as default ctor (i.e. no arguments)
-    virtual ~Vehicle();
-    virtual int payload() = 0;
-    int numSeats();         // a 'getter' method to get a value; no 'setter' here
-};
-
-//======================================
-
-class Car : public Vehicle {
-protected:
-    int _maxWeight;     // german: zulässiges Gesamtgewicht
-public:
-    Car(int numSeats, int maxWeight);
-    virtual int payload();
-    
-};
-
-//======================================
-
-class Truck : public Vehicle {
-protected:
-    int _payload;
-public:
-    Truck(int numSeats, int payload);
-    virtual int payload();
-};
-
-//======================================
-
-Vehicle::Vehicle(int numSeats){
-    _numSeats = numSeats;
-}
-
-Vehicle::~Vehicle(){
-    std::cout << "destroying a Vehicle" << std::endl;
-}
-
-int Vehicle::numSeats(){
-    return _numSeats;
-}
-
-//======================================
-
-Car::Car(int numSeats, int maxWeight){
-    _numSeats = numSeats;
-    _maxWeight = maxWeight;
-}
-
-int Car::payload(){
-    return _maxWeight - (_numSeats*75);
-}
-
-//======================================
-
-Truck::Truck(int numSeats, int payload){
-    _numSeats = numSeats;
-    _payload = payload;
-}
-
-int Truck::payload(){
-    return _payload;
-}
-
-//======================================
-
-
-void printVehicleInfo(Vehicle* v){
-    std::cout << "typeid=`" << typeid(*v).name() << "`"
-    << " numSeats=" << v->numSeats()
-    << " payload=" << v->payload() << std::endl;
-}
-
-int main(int argc, const char * argv[]) {
-
-    Car* c   = new Car(5, 1000);    // create a new object of class Car in free store
-    Truck* t = new Truck(3, 7500);
-    
-    std::cout << "1" << std::endl;
-    std::cout << "c: numSeats=" << c->numSeats() << " payload=" << c->payload() << std::endl;
-    std::cout << "t: numSeats=" << t->numSeats() << " payload=" << t->payload() << std::endl;
-    
-    std::cout << std::endl << "2" << std::endl;
-    Vehicle* v = c;             // a Car `is a` Vehicle => implicitly convertible
-    printVehicleInfo(v);
-    v = t;                      // a Truck `is a` Vehicle => implicitly convertible
-    printVehicleInfo(v);
-    
-    
-    // release memory occupied by t,c for use by future objects created by `new`
-    // do NOT release v. it is only an alias
-   delete t;
-    delete c;
-    
-    return 0;
-}
diff --git a/05_OO/MP/main_mp4_OO_b.cpp b/05_OO/MP/main_mp4_OO_b.cpp
deleted file mode 100644
index 2e6ee06..0000000
--- a/05_OO/MP/main_mp4_OO_b.cpp
+++ /dev/null
@@ -1,217 +0,0 @@
-//  file main_mp4_OO_b.cpp
-#include <iostream>
-#include <cassert>
-
-//=======================================
-
-struct FooVal {
-    FooVal(int initialValue=0);
-    ~FooVal();
-private:
-    int _someValue;
-};
-
-//=======================================
-
-class FooBase {
-    FooVal _value;
-public:
-    FooBase();
-    FooBase(int initialValue);
-    virtual ~FooBase();
-};
-
-//=======================================
-
-class FooDerived : public FooBase {
-  int _ival;
-public:
-    FooDerived(int initialValue);
-    ~FooDerived();
-};
-
-//=======================================
-
-class Bar {
-    FooBase *_helperObject;
-public:
-    Bar();
-    ~Bar();
-};
-
-//=======================================
-
-class Base {
-    int a;
-public:
-    Base(int a) {
-        this.a = a;
-    }
-};
-
-class Derived : public Base{
-    int b;
-public:
-    Derived(int a, int b) {
-        Base::Base(a);
-        this.b = b;
-    }
-};
-
-//=======================================
-
-FooVal::FooVal(int initialValue)
-: _someValue(initialValue)
-{
-    std::cout << "FooVal::FooVal()" << std::endl;
-}
-
-FooVal::~FooVal(){
-    std::cout << "FooVal::~FooVal()" << std::endl;
-}
-
-FooBase::FooBase(){
-    std::cout << "FooBase::FooBase()" << std::endl;
-}
-
-FooBase::FooBase(int initialValue)
-: _value(initialValue)
-{
-    std::cout << "FooBase::FooBase(int)" << std::endl;
-}
-
-FooBase::~FooBase(){
-    std::cout << "FooBase::~FooBase(" << std::endl;
-}
-
-FooDerived::FooDerived(int initialValue)
-: FooBase(initialValue), _ival(0)
-{
-    std::cout << "FooDerived::FooDerived()" << std::endl;
-}
-
-FooDerived::~FooDerived(){
-    std::cout << "FooDerived::~FooDerived()" << std::endl;
-}
-
-Bar::Bar(){
-    _helperObject =  new FooDerived(0);
-}
-
-Bar::~Bar(){
-    delete _helperObject;
-}
-
-
-struct StackObject {
-private:
-    void* operator new(size_t size) noexcept {
-        bool noStackObjectOnHeap = false;
-        assert(noStackObjectOnHeap);
-        return nullptr;
-    }
-};
-
-
-struct A : public StackObject {
-    A(){std::cout << "+A ";}
-    //A(const A&){std::cout << "+A";}
-    ~A(){std::cout << "-A ";}
-};
-
-struct B : public StackObject {
-    B(){std::cout << "+B ";}
-    //B(const B&){std::cout << "+B";}
-    ~B(){std::cout << "-B ";}
-};
-
-
-struct C : public StackObject {
-    C(){std::cout << "+C ";}
-    //C(const C&){std::cout << "+C";}
-    ~C(){std::cout << "-C ";}
-};
-
-class HeapObject{
-public:
-    void*   operator new (size_t size);
-    HeapObject();
-    virtual ~HeapObject();
-    static bool assertionsHold();
-protected:
-private:
-    static int ctorCount;
-    static int dtorCount;
-    static int newCount;
-    //    static void remove(HeapObject *);
-    HeapObject(const HeapObject&) = delete;
-    HeapObject& operator=(const HeapObject&) = delete;
-};
-
-int HeapObject::ctorCount = 0;
-int HeapObject::dtorCount = 0;
-int HeapObject::newCount  = 0;
-
-void*   HeapObject::operator new (size_t size){
-    newCount++;
-    return new char[size];
-}
-
-HeapObject::HeapObject(){
-    ctorCount++;
-}
-
-HeapObject::~HeapObject(){
-    dtorCount++;
-}
-
-bool HeapObject::assertionsHold(){
-    assert(ctorCount == newCount);   // all objects have been allocated on heap
-    assert(ctorCount == dtorCount);  // all objects have been deleted
-    return true;
-}
-
-
-class K : public HeapObject
-{
-public:
-  K(){std::cout << "+K ";}
-    ~K(){std::cout << "-K ";}
-};
-
-class L {
-public:
-  L(){std::cout << "+L ";}
-  ~L(){std::cout << "-L ";}
-};
-
-
-class M {
-public:
-    M(){std::cout << "+M ";}
-    ~M(){std::cout << "-M ";}
-};
-
-
-
-int main(int argc, const char * argv[]) {
-  Bar * bar = new Bar();
-  // ...
-  delete bar; // implies "delete _helperObject";
-
-  FooBase *obj = new FooDerived(7);
-  delete obj;
-
-  {
-    C c;
-    K* k = new K();
-    delete k;
-  }
-
-  HeapObject::assertionsHold();
-  std::cout << " ENDE" << std::endl;
-  return 0;
-}
-
-
-
diff --git a/05_OO/MP/shapes_main.cpp b/05_OO/MP/shapes_main.cpp
index 62d3c50..f09dcb8 100644
--- a/05_OO/MP/shapes_main.cpp
+++ b/05_OO/MP/shapes_main.cpp
@@ -1,11 +1,6 @@
-#include <utility>
-
-#include <utility>
-
-#include <iostream>
+#include "../../helpers/AnsiConsole.h"
 #include <cmath>
 #include <vector>
-#include "../../helpers/AnsiConsole.h"
 
 struct Position {
     int x;
@@ -34,7 +29,6 @@ Shape::Shape(Position position, Colors color) {
 
 Shape::~Shape() = default;
 
-
 class Point : public Shape{
 
 public:
@@ -141,10 +135,6 @@ Scene::~Scene() {
     }
 }
 
-
-
-
-
 int main(int argc, char **argv) {
     std::vector<Shape*> shapes;
 
diff --git a/05_OO/Testat/AnsiConsoleDemo.cpp b/05_OO/Testat/AnsiConsoleDemo.cpp
deleted file mode 100644
index 136daf0..0000000
--- a/05_OO/Testat/AnsiConsoleDemo.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <iostream>
-#include <cmath>
-#include "AnsiConsole.h"
-
-/*
- see
- https://en.wikipedia.org/wiki/ANSI_escape_code
- https://gist.github.com/vratiu/9780109
- https://gist.github.com/RobinMalfait/7881398
- */
-
-
-int main(int argc, char **argv)
-{
-  ansiConsole.clearScreen();
-  // x=1 and y=1 is the upper left corner
-  // x and y are more like column and row
-  ansiConsole.printText(4,4,"Hello, World!");
-
-  // draw a pixel, sort of
-  ansiConsole.printText(3,3,"*");
-  // draw a line
-  for(int i=0;i<10;i++){
-    ansiConsole.printText(2+i,2,"-", Colors::GREEN);
-  }
-  ansiConsole.printText(5,15,"end.");
-
-  return 0;
-}
diff --git a/05_OO/Testat/build.sh b/05_OO/Testat/build.sh
deleted file mode 100644
index 4237857..0000000
--- a/05_OO/Testat/build.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-clang++ -std=c++14 -o shape_main.out -I ../helpers/ shapes_main.cpp ../helpers/AnsiConsole.cpp 
-clang++ -std=c++14 -o ansiConsole.out -I ../helpers/ AnsiConsoleDemo.cpp ../helpers/AnsiConsole.cpp
\ No newline at end of file
diff --git a/05_OO/Testat/main_mp4_OO_a_vehicles.cpp b/05_OO/Testat/main_mp4_OO_a_vehicles.cpp
deleted file mode 100644
index 9eeac3d..0000000
--- a/05_OO/Testat/main_mp4_OO_a_vehicles.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-#include <iostream>
-#include <typeinfo>
-
-
-//======================================
-
-class Vehicle {
-protected:
-    int _numSeats;
-public:
-    Vehicle(int numSeats=0);// may serve as default ctor (i.e. no arguments)
-    virtual ~Vehicle();
-    virtual int payload() = 0;
-    int numSeats();         // a 'getter' method to get a value; no 'setter' here
-};
-
-//======================================
-
-class Car : public Vehicle {
-protected:
-    int _maxWeight;     // german: zulässiges Gesamtgewicht
-public:
-    Car(int numSeats, int maxWeight);
-    virtual int payload();
-    
-};
-
-//======================================
-
-class Truck : public Vehicle {
-protected:
-    int _payload;
-public:
-    Truck(int numSeats, int payload);
-    virtual int payload();
-};
-
-//======================================
-
-Vehicle::Vehicle(int numSeats){
-    _numSeats = numSeats;
-}
-
-Vehicle::~Vehicle(){
-    std::cout << "destroying a Vehicle" << std::endl;
-}
-
-int Vehicle::numSeats(){
-    return _numSeats;
-}
-
-//======================================
-
-Car::Car(int numSeats, int maxWeight){
-    _numSeats = numSeats;
-    _maxWeight = maxWeight;
-}
-
-int Car::payload(){
-    return _maxWeight - (_numSeats*75);
-}
-
-//======================================
-
-Truck::Truck(int numSeats, int payload){
-    _numSeats = numSeats;
-    _payload = payload;
-}
-
-int Truck::payload(){
-    return _payload;
-}
-
-//======================================
-
-
-void printVehicleInfo(Vehicle* v){
-    std::cout << "typeid=`" << typeid(*v).name() << "`"
-    << " numSeats=" << v->numSeats()
-    << " payload=" << v->payload() << std::endl;
-}
-
-int main(int argc, const char * argv[]) {
-
-    Car* c   = new Car(5, 1000);    // create a new object of class Car in free store
-    Truck* t = new Truck(3, 7500);
-    
-    std::cout << "1" << std::endl;
-    std::cout << "c: numSeats=" << c->numSeats() << " payload=" << c->payload() << std::endl;
-    std::cout << "t: numSeats=" << t->numSeats() << " payload=" << t->payload() << std::endl;
-    
-    std::cout << std::endl << "2" << std::endl;
-    Vehicle* v = c;             // a Car `is a` Vehicle => implicitly convertible
-    printVehicleInfo(v);
-    v = t;                      // a Truck `is a` Vehicle => implicitly convertible
-    printVehicleInfo(v);
-    
-    
-    // release memory occupied by t,c for use by future objects created by `new`
-    // do NOT release v. it is only an alias
-   delete t;
-    delete c;
-    
-    return 0;
-}
diff --git a/05_OO/Testat/main_mp4_OO_b.cpp b/05_OO/Testat/main_mp4_OO_b.cpp
deleted file mode 100644
index 2e6ee06..0000000
--- a/05_OO/Testat/main_mp4_OO_b.cpp
+++ /dev/null
@@ -1,217 +0,0 @@
-//  file main_mp4_OO_b.cpp
-#include <iostream>
-#include <cassert>
-
-//=======================================
-
-struct FooVal {
-    FooVal(int initialValue=0);
-    ~FooVal();
-private:
-    int _someValue;
-};
-
-//=======================================
-
-class FooBase {
-    FooVal _value;
-public:
-    FooBase();
-    FooBase(int initialValue);
-    virtual ~FooBase();
-};
-
-//=======================================
-
-class FooDerived : public FooBase {
-  int _ival;
-public:
-    FooDerived(int initialValue);
-    ~FooDerived();
-};
-
-//=======================================
-
-class Bar {
-    FooBase *_helperObject;
-public:
-    Bar();
-    ~Bar();
-};
-
-//=======================================
-
-class Base {
-    int a;
-public:
-    Base(int a) {
-        this.a = a;
-    }
-};
-
-class Derived : public Base{
-    int b;
-public:
-    Derived(int a, int b) {
-        Base::Base(a);
-        this.b = b;
-    }
-};
-
-//=======================================
-
-FooVal::FooVal(int initialValue)
-: _someValue(initialValue)
-{
-    std::cout << "FooVal::FooVal()" << std::endl;
-}
-
-FooVal::~FooVal(){
-    std::cout << "FooVal::~FooVal()" << std::endl;
-}
-
-FooBase::FooBase(){
-    std::cout << "FooBase::FooBase()" << std::endl;
-}
-
-FooBase::FooBase(int initialValue)
-: _value(initialValue)
-{
-    std::cout << "FooBase::FooBase(int)" << std::endl;
-}
-
-FooBase::~FooBase(){
-    std::cout << "FooBase::~FooBase(" << std::endl;
-}
-
-FooDerived::FooDerived(int initialValue)
-: FooBase(initialValue), _ival(0)
-{
-    std::cout << "FooDerived::FooDerived()" << std::endl;
-}
-
-FooDerived::~FooDerived(){
-    std::cout << "FooDerived::~FooDerived()" << std::endl;
-}
-
-Bar::Bar(){
-    _helperObject =  new FooDerived(0);
-}
-
-Bar::~Bar(){
-    delete _helperObject;
-}
-
-
-struct StackObject {
-private:
-    void* operator new(size_t size) noexcept {
-        bool noStackObjectOnHeap = false;
-        assert(noStackObjectOnHeap);
-        return nullptr;
-    }
-};
-
-
-struct A : public StackObject {
-    A(){std::cout << "+A ";}
-    //A(const A&){std::cout << "+A";}
-    ~A(){std::cout << "-A ";}
-};
-
-struct B : public StackObject {
-    B(){std::cout << "+B ";}
-    //B(const B&){std::cout << "+B";}
-    ~B(){std::cout << "-B ";}
-};
-
-
-struct C : public StackObject {
-    C(){std::cout << "+C ";}
-    //C(const C&){std::cout << "+C";}
-    ~C(){std::cout << "-C ";}
-};
-
-class HeapObject{
-public:
-    void*   operator new (size_t size);
-    HeapObject();
-    virtual ~HeapObject();
-    static bool assertionsHold();
-protected:
-private:
-    static int ctorCount;
-    static int dtorCount;
-    static int newCount;
-    //    static void remove(HeapObject *);
-    HeapObject(const HeapObject&) = delete;
-    HeapObject& operator=(const HeapObject&) = delete;
-};
-
-int HeapObject::ctorCount = 0;
-int HeapObject::dtorCount = 0;
-int HeapObject::newCount  = 0;
-
-void*   HeapObject::operator new (size_t size){
-    newCount++;
-    return new char[size];
-}
-
-HeapObject::HeapObject(){
-    ctorCount++;
-}
-
-HeapObject::~HeapObject(){
-    dtorCount++;
-}
-
-bool HeapObject::assertionsHold(){
-    assert(ctorCount == newCount);   // all objects have been allocated on heap
-    assert(ctorCount == dtorCount);  // all objects have been deleted
-    return true;
-}
-
-
-class K : public HeapObject
-{
-public:
-  K(){std::cout << "+K ";}
-    ~K(){std::cout << "-K ";}
-};
-
-class L {
-public:
-  L(){std::cout << "+L ";}
-  ~L(){std::cout << "-L ";}
-};
-
-
-class M {
-public:
-    M(){std::cout << "+M ";}
-    ~M(){std::cout << "-M ";}
-};
-
-
-
-int main(int argc, const char * argv[]) {
-  Bar * bar = new Bar();
-  // ...
-  delete bar; // implies "delete _helperObject";
-
-  FooBase *obj = new FooDerived(7);
-  delete obj;
-
-  {
-    C c;
-    K* k = new K();
-    delete k;
-  }
-
-  HeapObject::assertionsHold();
-  std::cout << " ENDE" << std::endl;
-  return 0;
-}
-
-
-
diff --git a/05_OO/Testat/shapes_main.cpp b/05_OO/Testat/shapes_main.cpp
index a2e7433..f09dcb8 100644
--- a/05_OO/Testat/shapes_main.cpp
+++ b/05_OO/Testat/shapes_main.cpp
@@ -1,46 +1,59 @@
-#include <iostream>
-#include <cmath>
 #include "../../helpers/AnsiConsole.h"
+#include <cmath>
+#include <vector>
 
 struct Position {
     int x;
     int y;
 
-    Position(int x_ = 0, int y_ = 0) {
+    explicit Position(int x_ = 0, int y_ = 0) {
         x = x_;
         y = y_;
     }
 };
 
-class Point {
+class Shape {
 protected:
-    Position _position;
+    Position position;
+    Colors color;
 public:
-    Point(int x = 0, int y = 0);
-
-    void draw();
+    Shape(Position position, Colors color);
+    virtual ~Shape();
+    virtual void draw() = 0;
 };
 
-Point::Point(int x, int y) {
-    _position = Position(x, y);
+Shape::Shape(Position position, Colors color) {
+    this->position = position;
+    this->color = color;
+}
+
+Shape::~Shape() = default;
+
+class Point : public Shape{
+
+public:
+    explicit Point(int x, int y, Colors color);
+    void draw() override;
+};
+
+Point::Point(int x, int y, Colors color) : Shape(Position(x, y), color) {
+
 }
 
 void Point::draw() {
-    ansiConsole.printText(_position.x, _position.y, "*", Colors::RED);
+    ansiConsole.printText(position.x, position.y, "*", color);
 }
 
-class Circle {
+class Circle : public Shape{
 protected:
-    Position _position;
     int _radius;
 public:
-    Circle(int x = 0, int y = 0, int radius = 0);
+    explicit Circle(int x = 0, int y = 0, int radius = 0, Colors color = Colors::GREEN);
 
-    void draw();
+    void draw() override;
 };
 
-Circle::Circle(int x, int y, int radius) {
-    _position = Position(x, y);
+Circle::Circle(int x, int y, int radius, Colors color) : Shape(Position(x, y), color) {
     _radius = radius;
 }
 
@@ -48,66 +61,100 @@ void Circle::draw() {
     /* see https://de.wikibooks.org/wiki/Formelsammlung_Mathematik:_Geometrie
      * Höhensatz des Euklid
      * */
-    int x_start = _position.x - _radius / 2;
-    int x_stop = _position.x + _radius / 2;
+    int x_start = position.x - _radius / 2;
+    int x_stop = position.x + _radius / 2;
 
     for (int i = x_start; i <= x_stop; i++) {
         double x_relative = double(i) - double(x_start);
         double h = sqrt(x_relative * (x_stop - x_start - x_relative));
-        ansiConsole.printText(_position.x + int(x_relative) - _radius / 2,
-                              _position.y + h, "#",
-                              Colors::GREEN);
-        ansiConsole.printText(_position.x + int(x_relative) - _radius / 2,
-                              _position.y - h, "#",
-                              Colors::GREEN);
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y + h), "#",
+                              color);
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y - h), "#",
+                              color);
 
     }
 }
 
-class Rectangle {
+class Rectangle : public Shape{
 protected:
-    Position position;
     int width;
     int height;
 
 public:
-    Rectangle(int x = 0, int y = 0, int width = 0, int height = 0);
-    void draw();
+    explicit Rectangle(int x = 0, int y = 0, int width = 0, int height = 0, Colors color = Colors::WHITE);
+    void draw() override;
 };
 
-Rectangle::Rectangle(int x, int y, int width, int height) {
-    position = Position(x, y);
+Rectangle::Rectangle(int x, int y, int width, int height, Colors color) : Shape(Position(x, y), color) {
     this->width = width;
     this->height = height;
 }
 
 void Rectangle::draw() {
+    int x_start = position.x - (width / 2);
+    int x_stop = position.x + (width / 2);
 
+    int y_start = position.y - (height / 2);
+    int y_stop = position.y + (height / 2);
+
+    for(int i = x_start; i <= x_stop; i++) {
+        ansiConsole.printText(i, position.y - (height / 2), "#", color);
+        ansiConsole.printText(i, position.y + (height / 2), "#", color);
+    }
+    for(int i = y_start; i< y_stop; i++) {
+        ansiConsole.printText(position.x + (width / 2), i, "#", color);
+        ansiConsole.printText(position.x - (width / 2), i, "#", color);
+    }
+}
+
+class Scene {
+private:
+    std::vector<Shape*> shapes;
+public:
+    explicit Scene(std::vector<Shape*> shapes);
+    void draw();
+    ~Scene();
+};
+
+Scene::Scene(std::vector<Shape*> shapes) : shapes(std::move(shapes)) {
+
+}
+
+void Scene::draw() {
+    ansiConsole.clearScreen();
+    for(Shape* shape : shapes) {
+        shape->draw();
+    }
+}
+
+Scene::~Scene() {
+    for(Shape* shape : shapes) {
+        delete shape;
+    }
 }
 
 int main(int argc, char **argv) {
-    // x=1 and y=1 is the upper left corner
-    // x and y are more like column and row
-    ansiConsole.printText(5, 5, "Hello, World!");
+    std::vector<Shape*> shapes;
 
-    Point *p = new Point(10, 10);
-    p->draw();
-
-    Point *p2 = new Point(2, 10);
-    p2->draw();
+    shapes.push_back(new Point(30, 10, Colors::RED));
+    shapes.push_back(new Point(28, 8, Colors::BLUE));
+    shapes.push_back(new Point(32, 8, Colors::BLUE));
 
 
-    Circle *c = new Circle(30, 15, 10);
-    c->draw();
-
-    Point *p3 = new Point(30, 15);
-    p3->draw();
+    shapes.push_back(new Circle(30, 10, 10, Colors::WHITE));
+    shapes.push_back(new Circle(30, 20, 15, Colors::GREEN));
 
 
-    delete p;
-    delete p2;
-    delete p3;
-    delete c;
+    shapes.push_back(new Rectangle(5, 21, 10, 10, Colors::MAGENTA));
+
+
+    auto *s = new Scene(shapes);
+    s->draw();
+
+    delete s;
+
 
     return 0;
 }
diff --git a/06_POLY/MP/shapes_main.cpp b/06_POLY/MP/shapes_main.cpp
new file mode 100644
index 0000000..f09dcb8
--- /dev/null
+++ b/06_POLY/MP/shapes_main.cpp
@@ -0,0 +1,160 @@
+#include "../../helpers/AnsiConsole.h"
+#include <cmath>
+#include <vector>
+
+struct Position {
+    int x;
+    int y;
+
+    explicit Position(int x_ = 0, int y_ = 0) {
+        x = x_;
+        y = y_;
+    }
+};
+
+class Shape {
+protected:
+    Position position;
+    Colors color;
+public:
+    Shape(Position position, Colors color);
+    virtual ~Shape();
+    virtual void draw() = 0;
+};
+
+Shape::Shape(Position position, Colors color) {
+    this->position = position;
+    this->color = color;
+}
+
+Shape::~Shape() = default;
+
+class Point : public Shape{
+
+public:
+    explicit Point(int x, int y, Colors color);
+    void draw() override;
+};
+
+Point::Point(int x, int y, Colors color) : Shape(Position(x, y), color) {
+
+}
+
+void Point::draw() {
+    ansiConsole.printText(position.x, position.y, "*", color);
+}
+
+class Circle : public Shape{
+protected:
+    int _radius;
+public:
+    explicit Circle(int x = 0, int y = 0, int radius = 0, Colors color = Colors::GREEN);
+
+    void draw() override;
+};
+
+Circle::Circle(int x, int y, int radius, Colors color) : Shape(Position(x, y), color) {
+    _radius = radius;
+}
+
+void Circle::draw() {
+    /* see https://de.wikibooks.org/wiki/Formelsammlung_Mathematik:_Geometrie
+     * Höhensatz des Euklid
+     * */
+    int x_start = position.x - _radius / 2;
+    int x_stop = position.x + _radius / 2;
+
+    for (int i = x_start; i <= x_stop; i++) {
+        double x_relative = double(i) - double(x_start);
+        double h = sqrt(x_relative * (x_stop - x_start - x_relative));
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y + h), "#",
+                              color);
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y - h), "#",
+                              color);
+
+    }
+}
+
+class Rectangle : public Shape{
+protected:
+    int width;
+    int height;
+
+public:
+    explicit Rectangle(int x = 0, int y = 0, int width = 0, int height = 0, Colors color = Colors::WHITE);
+    void draw() override;
+};
+
+Rectangle::Rectangle(int x, int y, int width, int height, Colors color) : Shape(Position(x, y), color) {
+    this->width = width;
+    this->height = height;
+}
+
+void Rectangle::draw() {
+    int x_start = position.x - (width / 2);
+    int x_stop = position.x + (width / 2);
+
+    int y_start = position.y - (height / 2);
+    int y_stop = position.y + (height / 2);
+
+    for(int i = x_start; i <= x_stop; i++) {
+        ansiConsole.printText(i, position.y - (height / 2), "#", color);
+        ansiConsole.printText(i, position.y + (height / 2), "#", color);
+    }
+    for(int i = y_start; i< y_stop; i++) {
+        ansiConsole.printText(position.x + (width / 2), i, "#", color);
+        ansiConsole.printText(position.x - (width / 2), i, "#", color);
+    }
+}
+
+class Scene {
+private:
+    std::vector<Shape*> shapes;
+public:
+    explicit Scene(std::vector<Shape*> shapes);
+    void draw();
+    ~Scene();
+};
+
+Scene::Scene(std::vector<Shape*> shapes) : shapes(std::move(shapes)) {
+
+}
+
+void Scene::draw() {
+    ansiConsole.clearScreen();
+    for(Shape* shape : shapes) {
+        shape->draw();
+    }
+}
+
+Scene::~Scene() {
+    for(Shape* shape : shapes) {
+        delete shape;
+    }
+}
+
+int main(int argc, char **argv) {
+    std::vector<Shape*> shapes;
+
+    shapes.push_back(new Point(30, 10, Colors::RED));
+    shapes.push_back(new Point(28, 8, Colors::BLUE));
+    shapes.push_back(new Point(32, 8, Colors::BLUE));
+
+
+    shapes.push_back(new Circle(30, 10, 10, Colors::WHITE));
+    shapes.push_back(new Circle(30, 20, 15, Colors::GREEN));
+
+
+    shapes.push_back(new Rectangle(5, 21, 10, 10, Colors::MAGENTA));
+
+
+    auto *s = new Scene(shapes);
+    s->draw();
+
+    delete s;
+
+
+    return 0;
+}
diff --git a/06_POLY/Testat/shapes_main.cpp b/06_POLY/Testat/shapes_main.cpp
new file mode 100644
index 0000000..f09dcb8
--- /dev/null
+++ b/06_POLY/Testat/shapes_main.cpp
@@ -0,0 +1,160 @@
+#include "../../helpers/AnsiConsole.h"
+#include <cmath>
+#include <vector>
+
+struct Position {
+    int x;
+    int y;
+
+    explicit Position(int x_ = 0, int y_ = 0) {
+        x = x_;
+        y = y_;
+    }
+};
+
+class Shape {
+protected:
+    Position position;
+    Colors color;
+public:
+    Shape(Position position, Colors color);
+    virtual ~Shape();
+    virtual void draw() = 0;
+};
+
+Shape::Shape(Position position, Colors color) {
+    this->position = position;
+    this->color = color;
+}
+
+Shape::~Shape() = default;
+
+class Point : public Shape{
+
+public:
+    explicit Point(int x, int y, Colors color);
+    void draw() override;
+};
+
+Point::Point(int x, int y, Colors color) : Shape(Position(x, y), color) {
+
+}
+
+void Point::draw() {
+    ansiConsole.printText(position.x, position.y, "*", color);
+}
+
+class Circle : public Shape{
+protected:
+    int _radius;
+public:
+    explicit Circle(int x = 0, int y = 0, int radius = 0, Colors color = Colors::GREEN);
+
+    void draw() override;
+};
+
+Circle::Circle(int x, int y, int radius, Colors color) : Shape(Position(x, y), color) {
+    _radius = radius;
+}
+
+void Circle::draw() {
+    /* see https://de.wikibooks.org/wiki/Formelsammlung_Mathematik:_Geometrie
+     * Höhensatz des Euklid
+     * */
+    int x_start = position.x - _radius / 2;
+    int x_stop = position.x + _radius / 2;
+
+    for (int i = x_start; i <= x_stop; i++) {
+        double x_relative = double(i) - double(x_start);
+        double h = sqrt(x_relative * (x_stop - x_start - x_relative));
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y + h), "#",
+                              color);
+        ansiConsole.printText(position.x + int(x_relative) - _radius / 2,
+                              static_cast<int>(position.y - h), "#",
+                              color);
+
+    }
+}
+
+class Rectangle : public Shape{
+protected:
+    int width;
+    int height;
+
+public:
+    explicit Rectangle(int x = 0, int y = 0, int width = 0, int height = 0, Colors color = Colors::WHITE);
+    void draw() override;
+};
+
+Rectangle::Rectangle(int x, int y, int width, int height, Colors color) : Shape(Position(x, y), color) {
+    this->width = width;
+    this->height = height;
+}
+
+void Rectangle::draw() {
+    int x_start = position.x - (width / 2);
+    int x_stop = position.x + (width / 2);
+
+    int y_start = position.y - (height / 2);
+    int y_stop = position.y + (height / 2);
+
+    for(int i = x_start; i <= x_stop; i++) {
+        ansiConsole.printText(i, position.y - (height / 2), "#", color);
+        ansiConsole.printText(i, position.y + (height / 2), "#", color);
+    }
+    for(int i = y_start; i< y_stop; i++) {
+        ansiConsole.printText(position.x + (width / 2), i, "#", color);
+        ansiConsole.printText(position.x - (width / 2), i, "#", color);
+    }
+}
+
+class Scene {
+private:
+    std::vector<Shape*> shapes;
+public:
+    explicit Scene(std::vector<Shape*> shapes);
+    void draw();
+    ~Scene();
+};
+
+Scene::Scene(std::vector<Shape*> shapes) : shapes(std::move(shapes)) {
+
+}
+
+void Scene::draw() {
+    ansiConsole.clearScreen();
+    for(Shape* shape : shapes) {
+        shape->draw();
+    }
+}
+
+Scene::~Scene() {
+    for(Shape* shape : shapes) {
+        delete shape;
+    }
+}
+
+int main(int argc, char **argv) {
+    std::vector<Shape*> shapes;
+
+    shapes.push_back(new Point(30, 10, Colors::RED));
+    shapes.push_back(new Point(28, 8, Colors::BLUE));
+    shapes.push_back(new Point(32, 8, Colors::BLUE));
+
+
+    shapes.push_back(new Circle(30, 10, 10, Colors::WHITE));
+    shapes.push_back(new Circle(30, 20, 15, Colors::GREEN));
+
+
+    shapes.push_back(new Rectangle(5, 21, 10, 10, Colors::MAGENTA));
+
+
+    auto *s = new Scene(shapes);
+    s->draw();
+
+    delete s;
+
+
+    return 0;
+}
diff --git a/07_STD/MP/grundgeruest.cpp b/07_STD/MP/grundgeruest.cpp
index 3b33a04..f242ce5 100644
--- a/07_STD/MP/grundgeruest.cpp
+++ b/07_STD/MP/grundgeruest.cpp
@@ -3,6 +3,8 @@
 #include <iostream>
 #include <ctime>
 #include <random>
+#include <list>
+#include <algorithm>
 #include <unordered_map>
 #include "grundgeruest.hpp"
 
@@ -39,26 +41,37 @@ int stringSimilarity(std::string string1, std::string string2) {
     //Anzahl der verschiedenen Zeichen zählen
     std::unordered_map<char, int> string1map;
     std::unordered_map<char, int> string2map;
+    std::unordered_map<char, int> characterCount;
 
     for(char c : string1) {
         string1map[c]++;
+        characterCount[c]++;
     }
     for(char c : string2) {
         string2map[c]++;
+        characterCount[c]++;
     }
 
     //gleiche Anzahl an verschiedenen Zeichen +10 Punkte
     if(string1map.size() == string2map.size()) points += 10;
 
+
     //auf gleiche Zeichenanzahl testen
-    int equalChars = 0;
+    //gleiche Anzahl an gleichen Zeichen
     int equalCharCount = 0;
-    for(std::pair<char, int> count : string1map) {
-        if(string2map.find(count.first) != string2map.end()) equalChars++;
-        if(string2map[count.first] == count.second) equalCharCount++;
+    int equalChars = 0;
+    for(std::pair<char, int> count : characterCount) {
+        if(string1map[count.first] == string2map[count.second]) equalCharCount++;
+        if(string1map[count.first] != 0 && string2map[count.first] != 0) equalChars++;
+    }
+    if(equalChars > 0) {
+        points += characterCount.size() / equalChars * 10;
+    }
+    if(equalCharCount > 0) {
+        points += characterCount.size() / equalCharCount;
     }
 
-    //TODO: Pnukte für gleiche Buchstaben und gleiche Buchstaben Anzahl vergeben
+    //TODO: Punkte für gleiche Buchstaben und gleiche Buchstaben Anzahl vergeben
 
 
     return points;
@@ -66,6 +79,26 @@ int stringSimilarity(std::string string1, std::string string2) {
 
 void unittest_stringSimilarity() {
     std::cout << "Hallo Welt | Hallo Welt ---> " << stringSimilarity("Hallo Welt", "Hallo Welt") << std::endl;
+    std::cout << "Hallo Welt | Hallo Baum --->" << stringSimilarity("Halllo Welt", "Hallo Baum") << std::endl;
     std::cout << "Hello World | Hallo Welt ---> " << stringSimilarity("Hello World", "Hallo Welt") << std::endl;
     std::cout << "bla | ping ---> " << stringSimilarity("bla", "ping") << std::endl;
+    std::cout << "Lorem ipsum..... | Lorem ipsum ---> " << stringSimilarity("Lorem ipsum dolor sit amet, "
+                                                                       "consetetur sadipscing elitr, "
+                                                                       "sed diam nonumy eirmod tempor"
+                                                                       "invidunt ut labore et dolore "
+                                                                       "magna aliquyam erat, sed diam voluptua. "
+                                                                       "At vero eos et accusam et justo duo dolores "
+                                                                       "et ea rebum. Stet clita kasd gubergren, "
+                                                                       "no sea takimata sanctus est Lorem "
+                                                                       "ipsum dolor sit amet. "
+                                                                       "Lorem ipsum dolor sit amet, "
+                                                                       "consetetur sadipscing elitr, "
+                                                                       "sed diam nonumy eirmod tempor "
+                                                                       "invidunt ut labore et dolore magna "
+                                                                       "aliquyam erat, sed diam voluptua. "
+                                                                       "At vero eos et accusam et justo duo dolores "
+                                                                       "et ea rebum. Stet clita kasd gubergren, "
+                                                                       "no sea takimata sanctus est Lorem ipsum "
+                                                                       "dolor sit amet.",
+            "Lorem ipsum") << std::endl;
 }
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd3be0c..7969eb2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,7 @@ cmake_minimum_required(VERSION 3.3)
 project(C/C++)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
+SET(CMAKE_BUILD_TYPE Debug)
 
 # These are the corresponding output paths
 set (EXECUTABLE_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/bin)
@@ -23,8 +24,8 @@ add_executable(04_UDEF_Testat 04_UDEF/Testat/Testat.cpp)
 add_executable(05_OO_MP 05_OO/MP/shapes_main.cpp helpers/AnsiConsole.cpp)
 add_executable(05_OO_Testat 05_OO/Testat/shapes_main.cpp helpers/AnsiConsole.cpp)
 
-add_executable(06_POLY_MP 06_POLY/MP/main_mp5_POLY.cpp)
-#add_executable(06_POLY_Testat 06_POLY/Testat/main_mp5_POLY.cpp)
+add_executable(06_POLY_MP 06_POLY/MP/shapes_main.cpp helpers/AnsiConsole.cpp)
+add_executable(06_POLY_Testat 06_POLY/Testat/shapes_main.cpp helpers/AnsiConsole.cpp)
 
 add_executable(07_STD_MP 07_STD/MP/grundgeruest.cpp)
 add_executable(07_STD_Testat 07_STD/Testat/grundgeruest.cpp)