diff --git a/Ideen.md b/Ideen.md
index e8722e9..4a903bb 100644
--- a/Ideen.md
+++ b/Ideen.md
@@ -2,8 +2,6 @@
 
 - Extra-Türchen (kein Buchstabe, nur manuelles Bild)
 - Türchen mit Tag "0" einem zufälligen Tag zuweisen
-- Option "Nur Groß-/Kleinbuchstaben" (standard nur groß)
-- Option "Leerzeichen ignorieren" (standard ja)
 - Option "Überspringe leere Türchen" (standard ja)
 - Option "custom Zuordnung Buchstaben" (standard leer)
 
@@ -20,3 +18,5 @@
 - Türchen anzeigen im DoorMapEditor
 - Lösungsbuchstaben weniger als türchen erzeugt bug
 - Türchen sichtbar machen (besser für touch, standard nein)
+- Option "Nur Groß-/Kleinbuchstaben" (standard nur groß)
+- Option "Leerzeichen ignorieren" (standard ja)
diff --git a/api/advent22_api/core/config.py b/api/advent22_api/core/config.py
index fa0aba1..255cdbd 100644
--- a/api/advent22_api/core/config.py
+++ b/api/advent22_api/core/config.py
@@ -1,6 +1,9 @@
+import re
 import tomllib
+from enum import Enum
+from random import Random
 
-from pydantic import BaseModel
+from pydantic import BaseModel, field_validator
 
 from .settings import SETTINGS
 from .webdav import WebDAV
@@ -11,13 +14,72 @@ class User(BaseModel):
     password: str
 
 
+class TransformedString(BaseModel):
+    class __Whitespace(str, Enum):
+        # Leerzeichen an Anfang und Ende entfernen
+        STRIP = "STRIP"
+
+        # whitespace entfernen
+        IGNORE = "IGNORE"
+
+    class __Case(str, Enum):
+        # GROSSBUCHSTABEN
+        UPPER = "UPPER"
+
+        # kleinbuchstaben
+        LOWER = "LOWER"
+
+        # ZuFÄllIg
+        RANDOM = "RANDOM"
+
+    value: str
+
+    whitespace: __Whitespace | None = __Whitespace.IGNORE
+    case: __Case | None = __Case.UPPER
+
+    @field_validator("whitespace", "case", mode="before")
+    def transform_from_str(cls, v) -> str | None:
+        if (result := str(v).upper()) != "KEEP":
+            return result
+
+    @property
+    def clean(self) -> str:
+        result = self.value
+
+        # Whitespace bearbeiten
+        if self.whitespace is self.__Whitespace.STRIP:
+            result = result.strip()
+
+        elif self.whitespace is self.__Whitespace.IGNORE:
+            result = re.sub(string=result, pattern=r"\s+", repl="")
+
+        # Groß-/Kleinschreibung verarbeiten
+        if self.case is self.__Case.UPPER:
+            result = result.upper()
+
+        elif self.case is self.__Case.LOWER:
+            result = result.lower()
+
+        elif self.case is self.__Case.RANDOM:
+            rnd = Random(self.value)
+
+            def randomcase(c: str) -> str:
+                if rnd.choice((True, False)):
+                    return c.upper()
+                return c.lower()
+
+            result = "".join(randomcase(c) for c in result)
+
+        return result
+
+
 class Puzzle(BaseModel):
     # Titel
     # TODO penner neue Route GET /user/title
     title: str
 
     # Lösungswort
-    solution: str
+    solution: TransformedString
 
     # Tag, an dem der Kalender startet
     # TODO penner
diff --git a/api/advent22_api/core/depends.py b/api/advent22_api/core/depends.py
index 8e10534..61ccaf3 100644
--- a/api/advent22_api/core/depends.py
+++ b/api/advent22_api/core/depends.py
@@ -46,7 +46,7 @@ async def get_all_parts(
     Lösung auf vorhandene Tage aufteilen
     """
 
-    solution_length = len(cfg.puzzle.solution)
+    solution_length = len(cfg.puzzle.solution.clean)
     num_days = len(days)
 
     rnd = await Random.get()
@@ -60,7 +60,7 @@ async def get_all_parts(
     ]
 
     result: dict[int, str] = {}
-    for day, letter in zip(solution_days, cfg.puzzle.solution):
+    for day, letter in zip(solution_days, cfg.puzzle.solution.clean):
         result[day] = result.get(day, "")
         result[day] += letter
 
diff --git a/api/advent22_api/core/helpers.py b/api/advent22_api/core/helpers.py
index 64b6fde..70fe716 100644
--- a/api/advent22_api/core/helpers.py
+++ b/api/advent22_api/core/helpers.py
@@ -18,7 +18,7 @@ class Random(random.Random):
     @classmethod
     async def get(cls, bonus_salt: Any = "") -> Self:
         cfg = await get_config()
-        return cls(f"{cfg.puzzle.solution}{cfg.random_seed}{bonus_salt}")
+        return cls(f"{cfg.puzzle.solution.clean}{cfg.random_seed}{bonus_salt}")
 
     def shuffled(self, population: Sequence[T]) -> Sequence[T]:
         return self.sample(population, k=len(population))
diff --git a/api/advent22_api/routers/admin.py b/api/advent22_api/routers/admin.py
index e6a77ba..9464107 100644
--- a/api/advent22_api/routers/admin.py
+++ b/api/advent22_api/routers/admin.py
@@ -59,7 +59,7 @@ async def get_config_model(
     return ConfigModel.model_validate(
         {
             "puzzle": {
-                "solution": cfg.puzzle.solution,
+                "solution": cfg.puzzle.solution.clean,
                 "first": event_dates.first,
                 "next": event_dates.next,
                 "last": event_dates.last,
diff --git a/ui/src/components/admin/ConfigView.vue b/ui/src/components/admin/ConfigView.vue
index 41909b0..35e11ef 100644
--- a/ui/src/components/admin/ConfigView.vue
+++ b/ui/src/components/admin/ConfigView.vue
@@ -11,7 +11,9 @@
               <dd>Advent22</dd>
 
               <dt>Lösung</dt>
-              <dd>{{ config_model.puzzle.solution }}</dd>
+              <dd class="is-family-monospace">
+                "{{ config_model.puzzle.solution }}"
+              </dd>
 
               <dt>Offene Türchen</dt>
               <dd>{{ num_user_doors }}</dd>