diff --git a/src/Bauernumwandlung.c b/src/Bauernumwandlung.c
index 417a991..7f05e2b 100644
--- a/src/Bauernumwandlung.c
+++ b/src/Bauernumwandlung.c
@@ -1,21 +1,19 @@
 #include <stdio.h>
-#include <stdlib.h>
 #include <stdbool.h>
+#include <string.h>
 #include "spieler.h"
 #include "Moving.h"
 #include "Bauer.h"
 #include "Input.h"
 
 bool ist_umwandlung_gerlaubt_Bauer(char** Brett, int startX, int startY, int endX, int endY, Player player) {
-   
-   if((player == PLAYER_WHITE) && (endY == 7) && (Brett[startY][startX] == 'P')){
+    if ((player == PLAYER_WHITE) && (endY == 7) && (Brett[startY][startX] == 'P')) {
         return true;
-   }else if((player == PLAYER_BLACK) && (endY == 0) && (Brett[startY][startX] == 'p')){
-    return true;
-   }else{
-    return false;
-   }
-
+    } else if ((player == PLAYER_BLACK) && (endY == 0) && (Brett[startY][startX] == 'p')) {
+        return true;
+    } else {
+        return false;
+    }
 }
 
 char* bauer_umwandel_abfrage(char** Brett, int startX, int startY, int endX, int endY, Player player){
@@ -31,24 +29,22 @@ char* bauer_umwandel_abfrage(char** Brett, int startX, int startY, int endX, int
             Figur = getUserInput();           
         }
 
-        if((player == PLAYER_WHITE && (Figur == 'Q' || Figur == 'R' || Figur == 'B' || Figur == 'N')) ||
-        (player == PLAYER_BLACK && (Figur == 'q' || Figur == 'r' || Figur == 'b' || Figur == 'n'))){
+        if ((player == PLAYER_WHITE && (Figur == 'Q' || Figur == 'R' || Figur == 'B' || Figur == 'N')) ||
+            (player == PLAYER_BLACK && (Figur == 'q' || Figur == 'r' || Figur == 'b' || Figur == 'n'))) {
             return Figur;
-        }else{
-            return 'W';
+        } else {
+            return 'W'; // Undefiniertes Zeichen als Fehlerwert
         }
     }
-    
+    return 'W'; // Undefiniertes Zeichen als Fehlerwert
 }
 
-void bauer_umwandeln(char** Brett, int startX, int startY, int endX, int endY, Player player){
-
-    char* Figur = bauer_umwandel_abfrage(Brett,startX,startY,endX,endY,player);
-    if(Figur != 'W'){
+void bauer_umwandeln(char** Brett, int startX, int startY, int endX, int endY, Player player) {
+    char Figur = bauer_umwandel_abfrage(Brett, startX, startY, endX, endY, player);
+    if (Figur != 'W') {
         Brett[endY][endX] = Figur;
         Brett[startY][startX] = ' ';
     }else{
         printf("Invalid move");
     }   
 }
-
diff --git a/src/schach_in_ein_puzzle/PuzzleI.c b/src/schach_in_ein_puzzle/PuzzleI.c
index d927864..8d6f5d8 100644
--- a/src/schach_in_ein_puzzle/PuzzleI.c
+++ b/src/schach_in_ein_puzzle/PuzzleI.c
@@ -59,4 +59,16 @@ void print_Puzzlebrett(char** Brett) {
         printf("\n");
     }
     printf("\n");
+}
+
+void Puzzlebrettspeicher_freigeben(char** Brett) { 
+    if (Brett == NULL) {
+        return;
+    }
+
+    for (int i = 0; i < 8; i++) {
+        free(Brett[i]);
+    }
+
+    free(Brett);
 }
\ No newline at end of file
diff --git a/src/schach_in_ein_puzzle/PuzzleI.h b/src/schach_in_ein_puzzle/PuzzleI.h
index 867c5cd..112a9a2 100644
--- a/src/schach_in_ein_puzzle/PuzzleI.h
+++ b/src/schach_in_ein_puzzle/PuzzleI.h
@@ -5,5 +5,6 @@
 
 char** Puzzlebrett_erstellen();
 void print_Puzzlebrett(char** Brett);
+void Puzzlebrettspeicher_freigeben(char** Brett);
 
 #endif // PUZZLEI_H
\ No newline at end of file