diff --git a/To_the_moon/compute.py b/To_the_moon/compute.py
index 12a2144..1426f59 100644
--- a/To_the_moon/compute.py
+++ b/To_the_moon/compute.py
@@ -10,8 +10,11 @@ The functions perform validity checks on the dimensions:
 """
 
 from __future__ import annotations
+
 import math
 
+from tabulate import tabulate
+
 
 def matmul(a: list[list[float]], b: list[list[float]]) -> list[list[float]]:
     """Multiply two 2‑D matrices."""
@@ -86,21 +89,79 @@ if __name__ == "__main__":
     # Valid example: multiplication
     matrix_a = [[1, 2, 3], [4, 5, 6]]
     matrix_b = [[7, 8], [9, 10], [11, 12]]
+
     print("Valid multiplication result:")
-    print(matmul(matrix_a, matrix_b))
+    result_mul = matmul(matrix_a, matrix_b)
+    print(tabulate(result_mul, tablefmt="grid"))
 
     # Valid example: transposition
     print("\nTransposed matrix_a result:")
-    print(transpose(matrix_a))
+    result_trans = transpose(matrix_a)
+    print(tabulate(result_trans, tablefmt="grid"))
 
     # Valid example: rotation (2D)
     print("\nRotated 2D matrix (theta = 0.5) result:")
-    print(rot_2D(0.5))
+    result_rot = rot_2D(0.5)
+    print(tabulate(result_rot, tablefmt="fancy_grid"))
 
     # Example that raises ValueError
     try:
         invalid_b = [[1, 2], [3, 4]]
         print("\nThis should raise an error:")
-        print(matmul(matrix_a, invalid_b))
+        matmul(matrix_a, invalid_b)
     except ValueError as e:
-        print("Caught ValueError as expected:", e)
\ No newline at end of file
+        print("Caught ValueError as expected:", e)
+
+
+# Ruff-Analyse:
+#
+#   --> To_the_moon\compute.py:12:1
+#    |
+# 10 |   """
+# 11 |
+# 12 | / from __future__ import annotations
+# 13 | | import math
+# 14 | | from tabulate import tabulate
+#    | |_____________________________^
+# help: Organize imports
+#    |
+# 12 | from __future__ import annotations
+# 13 +
+# 14 | import math
+# 15 +
+# 16 | from tabulate import tabulate
+#    |
+#
+# SIM103 Return the condition `event.type != pygame.QUIT` directly
+#   --> To_the_moon\game.py:78:9
+#    |
+# 76 |               ``False`` bei ``pygame.QUIT``, sonst ``True``.
+# 77 |           """
+# 78 | /         if event.type == pygame.QUIT:
+# 79 | |             return False
+# 80 | |         return True
+#    | |___________________^
+# 81 |
+# 82 |       def update_game(self) -> bool:
+#    |
+# help: Replace with `return event.type != pygame.QUIT`
+#
+# I001 [*] Import block is un-sorted or un-formatted
+#  --> To_the_moon\moon.py:1:1
+#   |
+# 1 | / import pygame
+# 2 | |
+# 3 | | from compute import matmul, rot_2D, transpose
+# 4 | | from game import Game
+#   | |_____________________^
+# 5 |
+# 6 |   EARTH_RADIUS = 30
+#   |
+# help: Organize imports
+#   |
+# 1 | import pygame
+#   -
+# 2 | from compute import matmul, rot_2D, transpose
+#   |
+#
+# Found 3 errors.
\ No newline at end of file
diff --git a/To_the_moon/game.py b/To_the_moon/game.py
index e88c245..747505f 100644
--- a/To_the_moon/game.py
+++ b/To_the_moon/game.py
@@ -75,9 +75,8 @@ class Game:
         Returns:
             ``False`` bei ``pygame.QUIT``, sonst ``True``.
         """
-        if event.type == pygame.QUIT:
-            return False
-        return True
+
+        return event.type != pygame.QUIT
 
     def update_game(self) -> bool:
         """Aktualisiert den Spielzustand um einen Frame.
diff --git a/To_the_moon/moon.py b/To_the_moon/moon.py
index 9e40be8..1e226ea 100644
--- a/To_the_moon/moon.py
+++ b/To_the_moon/moon.py
@@ -1,5 +1,4 @@
 import pygame
-
 from compute import matmul, rot_2D, transpose
 from game import Game
 
diff --git a/To_the_moon/pyproject.toml b/To_the_moon/pyproject.toml
index 46e3b47..3a776b1 100644
--- a/To_the_moon/pyproject.toml
+++ b/To_the_moon/pyproject.toml
@@ -1,3 +1,4 @@
 [project]
 name = "matrixmania"
-version = "0.1.0"
\ No newline at end of file
+version = "0.1.0"
+dependencies = ["tabulate", "ruff"]
\ No newline at end of file