diff --git a/app.py b/app.py
index e0d0daa..94e9c97 100644
--- a/app.py
+++ b/app.py
@@ -10,6 +10,7 @@ import random
 from difflib import SequenceMatcher
 import re
 import json
+import unicodedata
 
 app = Flask(__name__)
 app.secret_key = os.getenv("SECRET_KEY")
@@ -53,13 +54,20 @@ def similarity(a, b):
     return SequenceMatcher(None, a.lower(), b.lower()).ratio()
 
 def clean_title(title):
+    # Unicode-Normalisierung (z.B. é -> e)
+    title = unicodedata.normalize('NFKD', title)
+    title = "".join([c for c in title if not unicodedata.combining(c)])
     # Entfernt alles in () oder []
     title = re.sub(r"(\s*[\(\[][^)\]]*[\)\]])", "", title)
     # Vereinheitliche Apostrophen und Anführungszeichen
     title = title.replace("’", "'").replace("‘", "'").replace("`", "'")
     title = title.replace('"', '').replace("„", '').replace("“", '').replace("”", '')
-    title = title.replace("'", "")  # Optional: alle Apostrophen entfernen
-    return title.strip()
+    title = title.replace("'", "")
+    # Entferne alle nicht-alphanumerischen Zeichen (außer Leerzeichen)
+    title = re.sub(r"[^a-zA-Z0-9äöüÄÖÜß ]", "", title)
+    # Mehrfache Leerzeichen zu einem
+    title = re.sub(r"\s+", " ", title)
+    return title.strip().lower()
 
 def get_all_playlist_tracks(sp, playlist_id):
     tracks = []
@@ -215,7 +223,8 @@ def check_answer():
     game_mode = data.get('game_mode', 'artist')
     playlist_id = data.get('playlist_id')
 
-    if game_mode == 'title':
+    # Immer clean_title für title und artist
+    if game_mode in ['title', 'artist']:
         guess = clean_title(guess)
         correct_answer = clean_title(correct_answer)