diff --git a/src/P481_Ajedrez.java b/src/P481_Ajedrez.java
index fd9e6b1..7ebf3a2 100644
--- a/src/P481_Ajedrez.java
+++ b/src/P481_Ajedrez.java
@@ -7,13 +7,17 @@ public class P481_Ajedrez {
     public static void main(String[] args) {
         Scanner sc = new Scanner(System.in);
         int h = 0, v = 0;
+        boolean detener = false;
         do {
             h = sc.nextInt();
             v = sc.nextInt();
-            if (h == 0 && v == 0) break;
-            char letra = (char) ((8 - h) + (int) ('a'));
-            System.out.printf("%c%d\n", letra, v);
-        } while (true);
+            if (h == 0 && v == 0) {
+                detener = true;
+            } else {
+                char letra = (char) ((8 - h) + (int) ('a'));
+                System.out.printf("%c%d\n", letra, v);
+            }
+        } while (!detener);
 		sc.close();
     }
 }