diff --git a/Minesweeper/Core/Inc/spielfeld.h b/Minesweeper/Core/Inc/spielfeld.h
index 89540a1..d1fddc0 100644
--- a/Minesweeper/Core/Inc/spielfeld.h
+++ b/Minesweeper/Core/Inc/spielfeld.h
@@ -34,8 +34,8 @@ void placeBombs(int** gameBoard, int size, int numBombs);
 void displayGameBoardUART(int** gameBoard, int size);
 void freeGameBoard(int** gameBoard, int size);
 int** createHiddenGameBoard(int** gameBoard, int size);
-int** revealCell(int** gameBoard, int** hiddenGameBoard, int size, char* position);
-void getPositionIndices(char* position, Position* pos);
+int** revealCell(int** gameBoard, int** hiddenGameBoard, int size, int row, int col);
+void getPositionIndices(int row, int col, Position* pos);
 void getNewPosition(Position* pos, int dx, int dy, Position* newPos);
 
 #endif /* INC_SPIELFELD_H_ */
diff --git a/Minesweeper/Core/Src/main.c b/Minesweeper/Core/Src/main.c
index 8cc4354..23223a7 100644
--- a/Minesweeper/Core/Src/main.c
+++ b/Minesweeper/Core/Src/main.c
@@ -107,7 +107,7 @@ int main(void)
   hiddenGameBoard= createHiddenGameBoard(gameBoard, size);
   displayGameBoardUART(hiddenGameBoard, size);
 
-  hiddenGameBoard= revealCell(gameBoard, hiddenGameBoard, size, "C3");
+  hiddenGameBoard= revealCell(gameBoard, hiddenGameBoard, size, 3, 5);
   displayGameBoardUART(hiddenGameBoard, size);
 
   /* USER CODE END 2 */
diff --git a/Minesweeper/Core/Src/spielfeld.c b/Minesweeper/Core/Src/spielfeld.c
index f83434c..7ac3ca6 100644
--- a/Minesweeper/Core/Src/spielfeld.c
+++ b/Minesweeper/Core/Src/spielfeld.c
@@ -8,8 +8,6 @@
 #include "spielfeld.h"
 #include "main.h"
 
-/*Test*/
-
 int** generateGameBoard(int size) {
     // Speicher für das Spielfeld reservieren
     int** gameBoard = (int**)malloc(size * sizeof(int*));
@@ -74,8 +72,6 @@ void placeBombs(int** gameBoard, int size, int numBombs) {
     }
 }
 
-
-
 void displayGameBoardUART(int** gameBoard, int size) {
     // Leere den Empfangspuffer der UART-Schnittstelle
     clearSerialBuffer(&huart2);
@@ -143,10 +139,7 @@ int** createHiddenGameBoard(int** gameBoard, int size) {
     return hiddenGameBoard;
 }
 
-void getPositionIndices(char* position, Position* pos) {
-    pos->col = toupper(position[0]) - 'A'; // Spaltenindex
-    pos->row = atoi(&position[1]) - 1; // Zeilenindex (von 0-basiert auf 1-basiert)
-}
+
 
 void getNewPosition(Position* pos, int dx, int dy, Position* newPos) {
     newPos->col = pos->col + dy;
@@ -176,9 +169,10 @@ void revealEmptyCells(int** gameBoard, int** hiddenGameBoard, int size, Position
     }
 }
 
-int** revealCell(int** gameBoard, int** hiddenGameBoard, int size, char* position) {
+int** revealCell(int** gameBoard, int** hiddenGameBoard, int size, int row, int col) {
     Position pos;
-    getPositionIndices(position, &pos);
+    pos.row = row - 1;
+    pos.col = col - 1;
 
     // Überprüfen, ob die Position im gültigen Bereich liegt
     if (pos.row < 0 || pos.row >= size || pos.col < 0 || pos.col >= size) {
@@ -203,3 +197,11 @@ int** revealCell(int** gameBoard, int** hiddenGameBoard, int size, char* positio
     return hiddenGameBoard;
 }
 
+void setFlag(int** hiddenGameBoard, int row, int col) {
+    if (hiddenGameBoard[row][col] = '?'){
+    	hiddenGameBoard[row][col] = '#';
+    }
+    else{
+    	hiddenGameBoard[row][col] = '?';
+    }
+}