diff --git a/src/main/c/TicTacToe.c b/src/main/c/TicTacToe.c
index 035d6c4..14e960e 100644
--- a/src/main/c/TicTacToe.c
+++ b/src/main/c/TicTacToe.c
@@ -44,4 +44,13 @@ int Winner(char Feld[3][3]) {
             else return 2;
         }
     }
+    // Überprüfen Diagonalen
+    if ((Feld[0][0] == Feld[1][1] && Feld[1][1] == Feld[2][2]) || (Feld[0][2] == Feld[1][1] && Feld[1][1] == Feld[2][0])) {
+        if (Feld[1][1] != '_') {
+            if (Feld[1][1] == 'X') {
+                return 1;
+            }
+            else return 2;
+        }
+    }
 }
\ No newline at end of file