diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..457f44d
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "python.analysis.typeCheckingMode": "basic"
+}
\ No newline at end of file
diff --git a/Tutorium/tut09/slides.pdf b/Tutorium/tut09/slides.pdf
index f6ee115..196224e 100644
Binary files a/Tutorium/tut09/slides.pdf and b/Tutorium/tut09/slides.pdf differ
diff --git a/Tutorium/tut09/src/my_collections.py b/Tutorium/tut09/src/my_collections.py
index a8986c0..d7f8d31 100644
--- a/Tutorium/tut09/src/my_collections.py
+++ b/Tutorium/tut09/src/my_collections.py
@@ -3,27 +3,27 @@ from dataclasses import dataclass, InitVar
 
 @dataclass
 class MyList[T]:
-    internal_list: InitVar[list[T]]
-    length: InitVar[int]
-    
-    def __init__(self):
-        self.__internal_list = []
+    _internal_list: InitVar[list[T]]
+    _length: InitVar[int]
+
+    def __init__(self) -> None:
+        self.__internal_list: list[T] = []
         self.__length = 0
-        
-    def add(self, item: T):
+
+    def add(self, item: T) -> None:
         self.__internal_list += [item]
         self.__length += 1
-        
 
     @property
     def length(self) -> int:
         return self.__length
 
+
 @dataclass
 class GameObject:
-    position: InitVar[tuple[int, int]]
+    _position: InitVar[tuple[int, int]]
 
-    def __post_init__(self, position: tuple[int, int]):
+    def __post_init__(self, position: tuple[int, int]) -> None:
         assert (0, 0) <= position
         self.__position = position
 
@@ -32,16 +32,17 @@ class GameObject:
         return self.__position
 
     @position.setter
-    def position(self, position: tuple[int, int]):
+    def position(self, position: tuple[int, int]) -> None:
         if (0, 0) > position:
             return
         self.__position = position
-    
+
+
 if __name__ == "__main__":
     xs: MyList[int] = MyList()
     xs.add(100)
     assert xs.length == 1
-    position = (0, 0)
+    position: tuple[int, int] = (0, 0)
     my_obj = GameObject(position)
     assert my_obj.position == (0, 0)
     try:
@@ -49,7 +50,7 @@ if __name__ == "__main__":
     except AssertionError:
         pass
     else:
-        raise AssertionError(f"{my_obj} should have thrown a assertation error")
+        raise AssertionError(
+            f"{my_obj} should have thrown a assertation error")
     my_obj.position = (-1, 0)
     assert my_obj.position == (0, 0)
-    
\ No newline at end of file
diff --git a/Tutorium/tut10/README.md b/Tutorium/tut10/README.md
index e69de29..d28f04d 100644
--- a/Tutorium/tut10/README.md
+++ b/Tutorium/tut10/README.md
@@ -0,0 +1,17 @@
+---
+marp: true
+paginate: true
+class: invert
+# theme: uncover
+footer: Tutorium 10 - 22.12.2023 - Nils Pukropp - https://s.narl.io/s/tutorium-10
+header:
+---
+
+# Tutorium 10 - 22.12.2023
+
+Weihnachtsaufgabe :)
+
+---
+
+# Aufgabe - SpaceArena
+
diff --git a/Tutorium/tut10/src/main.py b/Tutorium/tut10/src/main.py
new file mode 100644
index 0000000..d643987
--- /dev/null
+++ b/Tutorium/tut10/src/main.py
@@ -0,0 +1,26 @@
+from result import Err, Ok, Panick, Result
+from ui import run_command, Color
+from spacearena import Difficulty, SpaceArena
+
+
+
+if __name__ == '__main__':
+
+
+if __name__ == '__main__':
+    difficulty: Difficulty | None = None
+    while not difficulty:
+        difficulty = Difficulty.get_difficulty(
+            input(f"Choose your difficulty {[e.name.lower() for e in list(Difficulty)]}\n> ").upper())
+    print(f"Difficulty: {difficulty} selected!")
+    game = SpaceArena(difficulty)
+    print("Starting game!")
+    while game.is_running:
+        Err("error value hehe").unwrap_or("yay still works")
+        match run_command(input("> "), game):
+            case Ok(value):
+                print(f"{Color.OK}{value}{Color.ENDC}")
+            case Err(value):
+                print(f"{Color.BOLD}{Color.FAIL}Error:{Color.ENDC} {Color.WARNING}{value}{Color.ENDC}")
+
+
diff --git a/Tutorium/tut10/src/result.py b/Tutorium/tut10/src/result.py
new file mode 100644
index 0000000..a013f39
--- /dev/null
+++ b/Tutorium/tut10/src/result.py
@@ -0,0 +1,92 @@
+from abc import ABC
+from dataclasses import dataclass
+from typing import Callable, overload
+
+class Panick(Exception):
+    def __init__(self, msg_res: 'Err | str') -> None:
+        match msg_res:
+            case str(msg):
+                super().__init__(msg)
+            case _: 
+                super().__init__(f"thread `__main__` panicked:\ncalled `Result::unwrap()` on an `Err` value: \"{msg_res.value}\"")
+        
+    
+@dataclass
+class Result[V, E](ABC):
+    def unwrap(self) -> V:
+        match self:
+            case Ok(value):
+                return value
+        raise Panick(self) # type: ignore
+    
+    def expect(self, msg: str) -> V:
+        match self:
+            case Ok(value):
+                return value
+        raise Panick(msg)
+    
+    def is_ok(self) -> bool:
+        return isinstance(self, Ok)
+    
+    def is_err(self) -> bool:
+        return isinstance(self, Err)
+    
+    def unwrap_or(self, value: V) -> V:
+        match self:
+            case Ok(val):
+                return val
+        return value
+    
+    def and_[O](self, other: 'Result[O, E]') -> 'Result[O, E]':
+        match self, other:
+            case Err(value), _:
+                return Err(value)
+        return other
+    
+    def and_then[O](self, func: Callable[[V], 'Result[O, E]']) -> 'Result[O, E]':
+        match self:
+            case Ok(value):
+                return func(value)
+        return Err(self.value) # type: ignore
+
+@dataclass    
+class Ok[V, E](Result[V, E]):
+    value: V
+
+@dataclass
+class Err[V, E](Result[V, E]):
+    value: E
+    
+def __sqrt(num: float) -> Result[float, str]:
+    if num < 0:
+        return Err('negative sqrt')
+    return Ok(num ** 0.5)
+
+def test_result() -> None:
+    assert Ok(4.0).and_then(__sqrt) == Ok(2.0)
+    assert Ok(-5.0).and_then(__sqrt) == Err('negative sqrt')
+    assert Err("haha error").and_then(__sqrt) == Err("haha error")
+    assert Ok("test").unwrap() == "test"
+    try:
+        Err("haha error").unwrap()
+    except Panick:
+        pass
+    else:
+        assert False, 'didn\'t throw Panick'
+    assert Err('haha error').unwrap_or("doch nicht") == 'doch nicht'
+    
+    result = Ok('test result')
+    
+    match result:
+        case Ok(res):
+            assert res == 'test result'
+        case Err():
+            pass
+        
+    result = Err('test result')
+    
+    match result:
+        case Ok():
+            pass
+        case Err(res):
+            assert res == 'test result'
\ No newline at end of file
diff --git a/Tutorium/tut10/src/spacearena.py b/Tutorium/tut10/src/spacearena.py
new file mode 100644
index 0000000..c0b5863
--- /dev/null
+++ b/Tutorium/tut10/src/spacearena.py
@@ -0,0 +1,44 @@
+from dataclasses import dataclass, InitVar
+from enum import Enum
+from typing import Optional
+
+
+class Difficulty(Enum):
+    EASY    = 0.5
+    NORMAL  = 1.0
+    HARD    = 2.0
+   
+    @staticmethod
+    def get_difficulty(input: str) -> Optional['Difficulty']:
+        for e in list(Difficulty):
+            if e.name == input:
+                return e
+            
+    def __str__(self):
+        return self.name
+            
+
+
+@dataclass
+class SpaceArena:
+    _difficulty: InitVar[Difficulty] = Difficulty.NORMAL
+    
+    def __post_init__(self, difficulty: Difficulty = Difficulty.NORMAL) -> None:
+        self.__difficulty = difficulty
+        self.__is_running = True
+        
+        
+    @property
+    def difficulty(self) -> Difficulty:
+        return self.__difficulty
+    
+    @difficulty.setter
+    def difficulty(self, new_diff: Difficulty):
+        self.__difficulty = new_diff
+    
+    @property
+    def is_running(self) -> bool:
+        return self.__is_running
+    
+    def stop(self):
+        self.__is_running = False
\ No newline at end of file
diff --git a/Tutorium/tut10/src/ui.py b/Tutorium/tut10/src/ui.py
new file mode 100644
index 0000000..409c47f
--- /dev/null
+++ b/Tutorium/tut10/src/ui.py
@@ -0,0 +1,79 @@
+from abc import ABC, abstractmethod
+from enum import Enum 
+import re
+from typing import override
+from result import Ok, Err, Result
+from spacearena import Difficulty, SpaceArena
+
+class Color(Enum):
+    OK = '\033[92m'
+    FAIL = '\033[91m'
+    WARNING = '\033[93m'
+    ENDC = '\033[0m'
+    BOLD = '\033[1m'
+    UNDERLINE = '\033[4m'
+    
+    def __str__(self) -> str:
+        return self.value
+    
+
+class AbstractCommand(ABC):
+   
+    def matches(self, inp: str) -> Result[re.Match[str], None]:
+        if m := re.match(self.pattern(), inp):
+            return Ok(m)
+        return Err(None)
+    
+    @abstractmethod
+    def pattern(self) -> str:
+        pass
+    
+    @abstractmethod
+    def run(self, game: SpaceArena, args: list[str]) -> Result[str, str]:
+        pass
+    
+    
+class QuitCommand(AbstractCommand):
+    @override
+    def pattern(self) -> str:
+        return r"(quit)"
+    
+    @override
+    def run(self, game: SpaceArena, _: list[str]) -> Result[str, str]:
+        game.stop()
+        return Ok('quitting game!')
+    
+class DifficultyCommand(AbstractCommand):
+    @override
+    def pattern(self) -> str:
+        return r"(difficulty|diff)\s+(increase|decrease)"
+    
+    @override
+    def run(self, game: SpaceArena, args: list[str]) -> Result[str, str]:
+        diffs = list(Difficulty)
+        curr = diffs.index(game.difficulty)
+        
+        match args[0]:
+            case 'increase' if curr + 1 < len(diffs):
+                game.difficulty = diffs[curr + 1]
+                return Ok(f"Increasing difficulty to {game.difficulty}")
+            case 'increase':
+                return Err("maximum difficulty")
+            case 'decrease' if curr - 1 >= 0:
+                game.difficulty = diffs[curr - 1]
+                return Ok(f"Decreasing difficulty to {game.difficulty}")
+            case 'decrease':
+                return Err("minimum difficulty")
+        return Err("invalid input")
+    
+ALL_COMMANDS: list[AbstractCommand] = [QuitCommand(), DifficultyCommand()]
+    
+def run_command(inp: str, game: SpaceArena, commands: list[AbstractCommand] = ALL_COMMANDS) -> Result[str, str]:
+    for command in commands:
+        match command.matches(inp):
+            case Ok(value):
+                args = [str(s) for s in value.groups()]
+                return command.run(game, args[1:])
+        
+    
+    return Err("command not found")
\ No newline at end of file