diff --git a/Incinerator/binary-count.py b/Incinerator/binary-count.py
new file mode 100644
index 0000000..74ecffe
--- /dev/null
+++ b/Incinerator/binary-count.py
@@ -0,0 +1,11 @@
+def checkio(number: int) -> int:
+    return list(str(bin(number))).count('1')
+
+
+# These "asserts" using only for self-checking and not necessary for auto-testing
+if __name__ == '__main__':
+    assert checkio(4) == 1
+    assert checkio(15) == 4
+    assert checkio(1) == 1
+    assert checkio(1022) == 9
+    print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
diff --git a/Incinerator/dialogues.py b/Incinerator/dialogues.py
new file mode 100644
index 0000000..f4d02ca
--- /dev/null
+++ b/Incinerator/dialogues.py
@@ -0,0 +1,60 @@
+VOWELS = "aeiou"
+
+
+class User:
+    def __init__(self, name):
+        self.name = name
+        self.chat = None
+
+    def connect_on_chat(self, o_chat):
+        self.chat = o_chat
+
+    def send(self, text):
+        self.chat.human_chat += "{} said: {}\n".format(self.name, text)
+        robot_text = text.lower()
+        robot_text = "".join(["0" if x in VOWELS else "1" for x in robot_text])
+        self.chat.robot_chat += "{} said: {}\n".format(self.name, robot_text)
+
+
+class Human(User):
+    pass
+
+
+class Robot(User):
+    pass
+
+
+class Chat:
+    def __init__(self):
+        self.human_chat = ""
+        self.robot_chat = ""
+
+    def connect_human(self, human: Human):
+        human.connect_on_chat(self)
+
+    def show_human_dialogue(self) -> str:
+        return self.human_chat.strip('\n')
+
+    def connect_robot(self, robot: Robot):
+        robot.connect_on_chat(self)
+
+    def show_robot_dialogue(self) -> str:
+        return self.robot_chat.strip('\n')
+
+
+if __name__ == '__main__':
+    # These "asserts" using only for self-checking and not necessary for auto-testing
+
+    chat = Chat()
+    karl = Human("Karl")
+    bot = Robot("R2D2")
+    chat.connect_human(karl)
+    chat.connect_robot(bot)
+    karl.send("Hi! What's new?")
+    bot.send("Hello, human. Could we speak later about it?")
+    assert chat.show_human_dialogue() == """Karl said: Hi! What's new?
+R2D2 said: Hello, human. Could we speak later about it?"""
+    assert chat.show_robot_dialogue() == """Karl said: 101111011111011
+R2D2 said: 10110111010111100111101110011101011010011011"""
+
+    print("Coding complete? Let's try tests!")
diff --git a/Incinerator/morse-decoder.py b/Incinerator/morse-decoder.py
new file mode 100644
index 0000000..fd792c8
--- /dev/null
+++ b/Incinerator/morse-decoder.py
@@ -0,0 +1,41 @@
+MORSE = {'.-': 'a', '-...': 'b', '-.-.': 'c',
+         '-..': 'd', '.': 'e', '..-.': 'f',
+         '--.': 'g', '....': 'h', '..': 'i',
+         '.---': 'j', '-.-': 'k', '.-..': 'l',
+         '--': 'm', '-.': 'n', '---': 'o',
+         '.--.': 'p', '--.-': 'q', '.-.': 'r',
+         '...': 's', '-': 't', '..-': 'u',
+         '...-': 'v', '.--': 'w', '-..-': 'x',
+         '-.--': 'y', '--..': 'z', '-----': '0',
+         '.----': '1', '..---': '2', '...--': '3',
+         '....-': '4', '.....': '5', '-....': '6',
+         '--...': '7', '---..': '8', '----.': '9'
+         }
+
+
+def morse_decoder(code: str) -> str:
+    sentence = ""
+    while len(code) > 0:
+        if code[0] == " ":
+            sentence += " "
+            code = code[2:]
+        next_space = code.find(" ")
+        if next_space != -1:
+            letter = code[0:next_space]
+            code = code[next_space+1:]
+            sentence += MORSE[letter]
+        else:
+            sentence += MORSE[code]
+            code = ""
+    return sentence[0].upper() + sentence[1:]
+
+
+if __name__ == '__main__':
+    print("Example:")
+    print(morse_decoder('... --- ...'))
+
+    # These "asserts" using only for self-checking and not necessary for auto-testing
+    assert morse_decoder("... --- -- .   - . -..- -") == "Some text"
+    assert morse_decoder("..--- ----- .---- ---..") == "2018"
+    assert morse_decoder(".. -   .-- .- ...   .-   --. --- --- -..   -.. .- -.--") == "It was a good day"
+    print("Coding complete? Click 'Check' to earn cool rewards!")
diff --git a/OReilly/the-vampires.py b/OReilly/the-vampires.py
new file mode 100644
index 0000000..67c14be
--- /dev/null
+++ b/OReilly/the-vampires.py
@@ -0,0 +1,137 @@
+# Taken from mission The Defenders
+# Taken from mission Army Battles
+# Taken from mission The Warriors
+
+
+class Warrior:
+    def __init__(self):
+        self.health = 50
+        self.attack = 5
+        self.is_alive = True
+        self.defense = 0
+        self.vampirism = 0
+
+    def hit(self, other_unit) -> bool:
+        hit_points = self.attack - other_unit.defense
+        hit_points = hit_points if hit_points > 0 else 0
+        other_unit.health -= hit_points
+        other_unit.is_alive = other_unit.health > 0
+
+        self.health += (hit_points * self.vampirism)
+        return other_unit.is_alive
+
+
+class Knight(Warrior):
+    def __init__(self):
+        super().__init__()
+        self.attack = 7
+
+
+class Defender(Warrior):
+    def __init__(self):
+        super().__init__()
+        self.health = 60
+        self.attack = 3
+        self.defense = 2
+
+
+class Vampire(Warrior):
+    def __init__(self):
+        super().__init__()
+        self.health = 40
+        self.attack = 4
+        self.vampirism = 0.5
+
+
+class Rookie(Warrior):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.health = 50
+        self.attack = 1
+
+
+def fight(unit_1, unit_2):
+    while unit_1.is_alive and unit_2.is_alive:
+        if not unit_1.hit(unit_2):
+            return True
+        if not unit_2.hit(unit_1):
+            return False
+
+
+class Army:
+    def __init__(self):
+        self.units = []
+
+    def add_units(self, unit_type, quantity):
+        for i in range(quantity):
+            self.units.append(unit_type())
+
+
+class Battle:
+    @staticmethod
+    def fight(army_1: Army, army_2: Army) -> bool:
+        while len(army_1.units) > 0 and len(army_2.units) > 0:
+            current_unit_1 = army_1.units[0]
+            current_unit_2 = army_2.units[0]
+            if fight(current_unit_1, current_unit_2):
+                army_2.units.pop(0)
+            else:
+                army_1.units.pop(0)
+        return len(army_1.units) > 0
+
+
+if __name__ == '__main__':
+    # These "asserts" using only for self-checking and not necessary for auto-testing
+
+    # fight tests
+    chuck = Warrior()
+    bruce = Warrior()
+    carl = Knight()
+    dave = Warrior()
+    mark = Warrior()
+    bob = Defender()
+    mike = Knight()
+    rog = Warrior()
+    lancelot = Defender()
+    eric = Vampire()
+    adam = Vampire()
+    richard = Defender()
+    ogre = Warrior()
+
+    assert fight(chuck, bruce) == True
+    assert fight(dave, carl) == False
+    assert chuck.is_alive == True
+    assert bruce.is_alive == False
+    assert carl.is_alive == True
+    assert dave.is_alive == False
+    assert fight(carl, mark) == False
+    assert carl.is_alive == False
+    assert fight(bob, mike) == False
+    assert fight(lancelot, rog) == True
+    assert fight(eric, richard) == False
+    assert fight(ogre, adam) == True
+
+    # battle tests
+    my_army = Army()
+    my_army.add_units(Defender, 2)
+    my_army.add_units(Vampire, 2)
+    my_army.add_units(Warrior, 1)
+
+    enemy_army = Army()
+    enemy_army.add_units(Warrior, 2)
+    enemy_army.add_units(Defender, 2)
+    enemy_army.add_units(Vampire, 3)
+
+    army_3 = Army()
+    army_3.add_units(Warrior, 1)
+    army_3.add_units(Defender, 4)
+
+    army_4 = Army()
+    army_4.add_units(Vampire, 3)
+    army_4.add_units(Warrior, 2)
+
+    battle = Battle()
+
+    assert battle.fight(my_army, enemy_army) == False
+    assert battle.fight(army_3, army_4) == True
+    print("Coding complete? Let's try tests!")
diff --git a/ScientificExpedition/the-defenders.py b/ScientificExpedition/the-defenders.py
new file mode 100644
index 0000000..579ac46
--- /dev/null
+++ b/ScientificExpedition/the-defenders.py
@@ -0,0 +1,118 @@
+# Taken from mission Army Battles
+# Taken from mission The Warriors
+
+
+class Warrior:
+    def __init__(self):
+        self.health = 50
+        self.attack = 5
+        self.is_alive = True
+        self.defense = 0
+
+    def hit(self, other_unit) -> bool:
+        hit_points = self.attack - other_unit.defense
+        hit_points = hit_points if hit_points > 0 else 0
+        other_unit.health -= hit_points
+        other_unit.is_alive = other_unit.health > 0
+        return other_unit.is_alive
+
+
+class Knight(Warrior):
+    def __init__(self):
+        super().__init__()
+        self.attack = 7
+
+
+class Defender(Warrior):
+    def __init__(self):
+        super().__init__()
+        self.health = 60
+        self.attack = 3
+        self.defense = 2
+
+
+class Rookie(Warrior):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.health = 50
+        self.attack = 1
+
+
+def fight(unit_1, unit_2):
+    while unit_1.is_alive and unit_2.is_alive:
+        if not unit_1.hit(unit_2):
+            return True
+        if not unit_2.hit(unit_1):
+            return False
+
+
+class Army:
+    def __init__(self):
+        self.units = []
+
+    def add_units(self, unit_type, quantity):
+        for i in range(quantity):
+            self.units.append(unit_type())
+
+
+class Battle:
+    def fight(self, army_1: Army, army_2: Army) -> bool:
+        while len(army_1.units) > 0 and len(army_2.units) > 0:
+            current_unit_1 = army_1.units[0]
+            current_unit_2 = army_2.units[0]
+            if fight(current_unit_1, current_unit_2):
+                army_2.units.pop(0)
+            else:
+                army_1.units.pop(0)
+        return len(army_1.units) > 0
+
+
+if __name__ == '__main__':
+    # These "asserts" using only for self-checking and not necessary for auto-testing
+
+    # fight tests
+    chuck = Warrior()
+    bruce = Warrior()
+    carl = Knight()
+    dave = Warrior()
+    mark = Warrior()
+    bob = Defender()
+    mike = Knight()
+    rog = Warrior()
+    lancelot = Defender()
+
+    assert fight(chuck, bruce) == True
+    assert fight(dave, carl) == False
+    assert chuck.is_alive == True
+    assert bruce.is_alive == False
+    assert carl.is_alive == True
+    assert dave.is_alive == False
+    assert fight(carl, mark) == False
+    assert carl.is_alive == False
+    assert fight(bob, mike) == False
+    assert fight(lancelot, rog) == True
+
+    # battle tests
+    my_army = Army()
+    my_army.add_units(Defender, 1)
+
+    enemy_army = Army()
+    enemy_army.add_units(Warrior, 2)
+
+    army_3 = Army()
+    army_3.add_units(Warrior, 1)
+    army_3.add_units(Defender, 1)
+
+    army_4 = Army()
+    army_4.add_units(Warrior, 2)
+
+    battle = Battle()
+
+    assert battle.fight(my_army, enemy_army) == False
+    assert battle.fight(army_3, army_4) == True
+    print("Coding complete? Let's try tests!")
+
+    unit_1 = Defender()
+    unit_2 = Rookie()
+    fight(unit_1, unit_2)
+    assert unit_1.health == 60
\ No newline at end of file