diff --git a/src/10_PITF/Testat/BankAccount.cpp b/src/10_PITF/Testat/BankAccount.cpp
index 77000ce..ae253c0 100644
--- a/src/10_PITF/Testat/BankAccount.cpp
+++ b/src/10_PITF/Testat/BankAccount.cpp
@@ -9,11 +9,11 @@ BankAccount::BankAccount(std::shared_ptr<Person> owner, std::string name) : name
 
 }
 
-std::unique_ptr<BankAccount> BankAccount::operator+(std::unique_ptr<Money> money) {
+std::unique_ptr<BankAccount> BankAccount::operator+(Money* money) {
     std::unique_ptr<Money> ptr = std::make_unique<Money>(new Money(money->getValue() + getMoney()->getValue(), money->getCurrency()));
 
-
     BankAccount::money.swap(ptr);
+    ptr.release();
     return std::make_unique<BankAccount>(this);
 }
 
diff --git a/src/10_PITF/Testat/BankAccount.h b/src/10_PITF/Testat/BankAccount.h
index 48e5446..d942d7c 100644
--- a/src/10_PITF/Testat/BankAccount.h
+++ b/src/10_PITF/Testat/BankAccount.h
@@ -15,7 +15,7 @@ private:
     std::unique_ptr<Money> money;
 public:
     explicit BankAccount(std::shared_ptr<Person> owner, std::string name);
-    std::unique_ptr<BankAccount> operator+(std::unique_ptr<Money> money);
+    std::unique_ptr<BankAccount> operator+(Money* money);
     std::unique_ptr<Money> operator-(int value);
     bool operator<(std::unique_ptr<BankAccount> bankAccount);
     std::string getName();
diff --git a/src/10_PITF/Testat/main.cpp b/src/10_PITF/Testat/main.cpp
index 859c8b7..c550c95 100644
--- a/src/10_PITF/Testat/main.cpp
+++ b/src/10_PITF/Testat/main.cpp
@@ -24,13 +24,13 @@ std::ostream &operator<<(std::ostream &os, Currency currency) {
     return os;
 }
 
-std::ostream &operator<<(std::ostream &os, Bill bill) {
-    os << bill.getValue() << " " << bill.getCurrency() << " " << bill.getSerial();
+std::ostream &operator<<(std::ostream &os, std::unique_ptr<Bill> bill) {
+    os << bill->getValue() << " " << bill->getCurrency() << " " << bill->getSerial();
     return os;
 }
 
-std::ostream &operator<<(std::ostream &os, Cash cash) {
-    os << cash.getValue() << " " << cash.getCurrency();
+std::ostream &operator<<(std::ostream &os, std::unique_ptr<Cash> cash) {
+    os << cash->getValue() << " " << cash->getCurrency();
     return os;
 }
 
@@ -39,45 +39,45 @@ std::ostream &operator<<(std::ostream &os, std::unique_ptr<Money> money) {
     return os;
 }
 
-std::ostream &operator<<(std::ostream &os, Person *person) {
+std::ostream &operator<<(std::ostream &os, std::shared_ptr<Person> person) {
     os << person->getName();
     return os;
 }
 
-std::ostream &operator<<(std::ostream &os, BankAccount bankAccount) {
-    os << bankAccount.getOwner() << " " << bankAccount.getName() << ": " << bankAccount.getMoney();
+std::ostream &operator<<(std::ostream &os, std::unique_ptr<BankAccount> bankAccount) {
+    os << bankAccount->getOwner() << " " << bankAccount->getName() << ": " << bankAccount->getMoney();
     return os;
 }
 
-std::set<Bank *> banks;
-std::set<std::unique_ptr<Person>> owners;
+std::set<std::unique_ptr<Bank>> banks;
+std::set<std::shared_ptr<Person>> owners;
 CashFactory *cashFactory;
 
 void setup() {
 
 
-    Bank *bank1 = new Bank("Bank 1");
-    Bank *bank2 = new Bank("Bank 2");
-    Bank *bank3 = new Bank("Bank 3");
+    std::unique_ptr<Bank> bank1 = std::make_unique<Bank>(new Bank("Bank 1"));
+    std::unique_ptr<Bank> bank2 = std::make_unique<Bank>(new Bank("Bank 2"));
+    std::unique_ptr<Bank> bank3 = std::make_unique<Bank>(new Bank("Bank 3"));
 
-    std::unique_ptr<Person> max = std::make_unique<Person>(new Person("Max Müller"));
-    std::unique_ptr<Person> marius = std::make_unique<Person>(new Person("Marius Müller"));
-    std::unique_ptr<Person> alex = std::make_unique<Person>(new Person("Alex Maier"));
+    std::shared_ptr<Person> max = std::make_shared<Person>(new Person("Max Müller"));
+    std::shared_ptr<Person> marius = std::make_shared<Person>(new Person("Marius Müller"));
+    std::shared_ptr<Person> alex = std::make_shared<Person>(new Person("Alex Maier"));
 
     owners.insert(max);
     owners.insert(marius);
     owners.insert(alex);
 
 
-    bank1->addAccount(new BankAccount(max, "Konto 1"));
-    bank2->addAccount(new BankAccount(max, "Konto 2"));
-    bank1->addAccount(new BankAccount(alex, "privat"));
-    bank3->addAccount(new BankAccount(alex, "geschäftlich 1"));
-    bank2->addAccount(new BankAccount(alex, "geschäftlich 2"));
-    bank1->addAccount(new BankAccount(alex, "geschäftlich 3"));
-    bank2->addAccount(new BankAccount(marius, "Konto 1"));
-    bank1->addAccount(new BankAccount(marius, "Konto 2"));
-    bank3->addAccount(new BankAccount(marius, "Konto 3"));
+    bank1->addAccount(std::make_unique<BankAccount>(new BankAccount(max, "Konto 1")));
+    bank2->addAccount(std::make_unique<BankAccount>(new BankAccount(max, "Konto 2")));
+    bank1->addAccount(std::make_unique<BankAccount>(new BankAccount(alex, "privat")));
+    bank3->addAccount(std::make_unique<BankAccount>(new BankAccount(alex, "geschäftlich 1")));
+    bank2->addAccount(std::make_unique<BankAccount>(new BankAccount(alex, "geschäftlich 2")));
+    bank1->addAccount(std::make_unique<BankAccount>(new BankAccount(alex, "geschäftlich 3")));
+    bank2->addAccount(std::make_unique<BankAccount>(new BankAccount(marius, "Konto 1")));
+    bank1->addAccount(std::make_unique<BankAccount>(new BankAccount(marius, "Konto 2")));
+    bank3->addAccount(std::make_unique<BankAccount>(new BankAccount(marius, "Konto 3")));
 
     banks.insert(bank1);
     banks.insert(bank2);
@@ -86,40 +86,50 @@ void setup() {
     cashFactory = new CashFactory();
 }
 
-void simulate() {
-    for (Bank *bank : banks) {
-        std::cout << std::endl;
-        std::cout << "======================== " << bank->getName() << " ========================" << std::endl;
-        std::cout << std::endl;
-        for (std::unique_ptr<BankAccount> bankAccount : bank->getAccounts()) {
-            for (int i = 0; i < 10000; ++i) {
-                int rnd = distribution(generator);
-                std::unique_ptr<Bill> bill = cashFactory->printBill(rnd, CurrencyValue::USD);
-                Coin *coin = cashFactory->printCoin(rnd, CurrencyValue::USD);
-                if (bill != nullptr) {
-                    *bankAccount + bill;
-                }
-                if (coin != nullptr) {
-                    *bankAccount + coin;
-                }
-
-                Money *fee = *bankAccount - 10;
-            }
-            std::cout << *bankAccount << std::endl;
+void forBankAccount(std::unique_ptr<BankAccount> bankAccount) {
+    for (int i = 0; i < 10000; ++i) {
+        int rnd = distribution(generator);
+        std::unique_ptr<Bill> bill = cashFactory->printBill(rnd, CurrencyValue::USD);
+        std::unique_ptr<Coin> coin = cashFactory->printCoin(rnd, CurrencyValue::USD);
+        if (bill != nullptr) {
+            bankAccount->operator+(bill.get());
         }
+        if (coin != nullptr) {
+            bankAccount->operator+(coin.get());
+        }
+
+        std::unique_ptr<Money> fee = bankAccount->operator-(10);
     }
+    std::cout << bankAccount.get() << std::endl;
+}
+
+void forBank(std::unique_ptr<Bank> bank) {
+    std::cout << std::endl;
+    std::cout << "======================== " << bank->getName() << " ========================" << std::endl;
+    std::cout << std::endl;
+
+    std::set<std::unique_ptr<BankAccount>> bankAccounts = bank->getAccounts();
+
+    std::for_each(bankAccounts.begin(), bankAccounts.end(), forBankAccount);
+
+}
+
+void simulate() {
+    std::for_each(banks.begin(), banks.end(), forBank);
 }
 
 void tearDown() {
-    for (Bank *bank : banks) {
-        for (BankAccount *bankAccount : bank->getAccounts()) {
-            delete bankAccount;
-        }
-        delete bank;
-    }
-    for(Person *person : owners) {
-        delete person;
-    }
+    std::for_each(banks.begin(), banks.end(), [] (std::unique_ptr<Bank> bank) {
+        std::set<std::unique_ptr<BankAccount>> bankAccounts = bank->getAccounts();
+       std::for_each(bankAccounts.begin(), bankAccounts.end(), [] (std::unique_ptr<BankAccount> bankAccount){
+           *bankAccount.release();
+       });
+       *bank.release();
+    });
+
+    std::for_each(owners.begin(), owners.end(), [] (std::shared_ptr<Person> person) {
+       *person.release();
+    });
 }