diff --git a/1-2 b/1-2
new file mode 100644
index 0000000..62e0bc3
--- /dev/null
+++ b/1-2
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+
+#define N 3  // 定义拼图的维度，这是一个3x3的拼图
+
+typedef struct Node {
+    int puzzle[N][N];  // 存储拼图状态的数组
+    struct Node* parent;  // 指向父节点的指针，用于追踪路径
+    int f, g, h;  // A*算法中的 f, g, h 值
+} Node;
+
+// 创建新的拼图节点
+Node* createNode(int puzzle[N][N]) {
+    Node* newnode = (Node*)malloc(sizeof(Node));
+    //请实现该函数
+    int i, j;  
+    for (i = 0; i < N; i++) {  
+        for (j = 0; j < N; j++) {  
+            newNode->puzzle[i][j] = puzzle[i][j];  
+        }  
+    }  
+    newNode->parent = NULL;  
+    newNode->f = 0;  
+    newNode->g = 0;  
+    newNode->h = 0;  
+    return newNode;  
+}
+
+// 检查两个拼图状态是否相同
+bool isSamePuzzle(int a[N][N], int b[N][N]) {
+    //相同则返回true,否则返回false
+    int i, j;  
+    for (i = 0; i < N; i++) {  
+        for (j = 0; j < N; j++) {  
+            if (a[i][j] != b[i][j]) {  
+                return false;  
+            }  
+        }  
+    }  
+    return true;  
+}
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