diff --git a/SearchFramework1.0.1/src/g04/problem/npuzzle/PuzzleState.java b/SearchFramework1.0.1/src/g04/problem/npuzzle/PuzzleState.java
index f15c41c..c490d30 100644
--- a/SearchFramework1.0.1/src/g04/problem/npuzzle/PuzzleState.java
+++ b/SearchFramework1.0.1/src/g04/problem/npuzzle/PuzzleState.java
@@ -94,6 +94,9 @@ public class PuzzleState extends State {
         return blank[i];
     }
 
+    /**
+     * 获取s1中对应s2空格位置的位将牌值 
+     */
     public int getBoardAtAnother(PuzzleState s1, PuzzleState s2) {
         return s1.getBoardAt(s2.getBlank(0), s2.getBlank(1));
     }