diff --git a/api/advent22_api/core/config.py b/api/advent22_api/core/config.py
index d1cdb1a..ebc1ac9 100644
--- a/api/advent22_api/core/config.py
+++ b/api/advent22_api/core/config.py
@@ -23,8 +23,11 @@ class TransformedString(BaseModel):
         # Leerzeichen an Anfang und Ende entfernen
         STRIP = "STRIP"
 
+        # whitespace durch Leerzeichen ersetzen
+        SPACE = "SPACE"
+
         # whitespace entfernen
-        IGNORE = "IGNORE"
+        REMOVE = "REMOVE"
 
     # special chars
 
@@ -43,7 +46,7 @@ class TransformedString(BaseModel):
 
     value: str
 
-    whitespace: __Whitespace = __Whitespace.IGNORE
+    whitespace: __Whitespace = __Whitespace.REMOVE
     case: __Case = __Case.UPPER
 
     @field_validator("whitespace", "case", mode="before")
@@ -54,21 +57,24 @@ class TransformedString(BaseModel):
     def clean(self) -> str:
         result = self.value
 
-        # Whitespace bearbeiten
-        if self.whitespace is self.__Whitespace.STRIP:
+        # Whitespace verarbeiten
+        if self.whitespace is TransformedString.__Whitespace.STRIP:
             result = result.strip()
 
-        elif self.whitespace is self.__Whitespace.IGNORE:
+        elif self.whitespace is TransformedString.__Whitespace.SPACE:
+            result = re.sub(string=result, pattern=r"\s+", repl=" ")
+
+        elif self.whitespace is TransformedString.__Whitespace.REMOVE:
             result = re.sub(string=result, pattern=r"\s+", repl="")
 
         # Groß-/Kleinschreibung verarbeiten
-        if self.case is self.__Case.UPPER:
+        if self.case is TransformedString.__Case.UPPER:
             result = result.upper()
 
-        elif self.case is self.__Case.LOWER:
+        elif self.case is TransformedString.__Case.LOWER:
             result = result.lower()
 
-        elif self.case is self.__Case.RANDOM:
+        elif self.case is TransformedString.__Case.RANDOM:
             rnd = Random(self.value)
 
             def randomcase(c: str) -> str: