diff --git a/src/TicTacToe.c b/src/TicTacToe.c
index 108db1a..a81d287 100644
--- a/src/TicTacToe.c
+++ b/src/TicTacToe.c
@@ -15,35 +15,38 @@ int main() {
 
     drawBoard(pos1, pos2, pos3, pos4, pos5, pos6, pos7, pos8, pos9);
 
-    int in;
-    printf("Choose a number: ");
-    scanf("%d", &in);
-    printf("\n");
-
-    if (pos1 == in) {
-        pos1 = o;
-    } else if (pos2 == in) {
-        pos2 = o;
-    } else if (pos3 == in) {
-        pos3 = o;
-    } else if (pos4 == in) {
-        pos4 = o;
-    } else if (pos5 == in) {
-        pos5 = o;
-    } else if (pos6 == in) {
-        pos6 = o;
-    } else if (pos7 == in) {
-        pos7 = o;
-    } else if (pos8 == in) {
-        pos8 = o;
-    } else if (pos9 == in) {
-        pos9 = o;
-    } else {
-        printf("Not Available.");
+    // Spielschleife
+    for (int i = 0; i < 9; i++) {
+        int in;
+        printf("Choose a number: ");
+        scanf("%d", &in);
+        printf("\n");
 
+        if (pos1 == in) {
+            pos1 = o;
+        } else if (pos2 == in) {
+            pos2 = o;
+        } else if (pos3 == in) {
+            pos3 = o;
+        } else if (pos4 == in) {
+            pos4 = o;
+        } else if (pos5 == in) {
+            pos5 = o;
+        } else if (pos6 == in) {
+            pos6 = o;
+        } else if (pos7 == in) {
+            pos7 = o;
+        } else if (pos8 == in) {
+            pos8 = o;
+        } else if (pos9 == in) {
+            pos9 = o;
+        } else {
+            printf("Try again. ");
+            i--;  // wiederholen
+            continue;
+        }
+        drawBoard(pos1, pos2, pos3, pos4, pos5, pos6, pos7, pos8, pos9);
     }
-    drawBoard(pos1, pos2, pos3, pos4, pos5, pos6, pos7, pos8, pos9);
-
     return 0;
 }