diff --git a/lib/main.dart b/lib/main.dart
index b0319bf..73c4823 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -59,6 +59,8 @@ class MyHomePage extends StatefulWidget {
 
 class _MyHomePageState extends State<MyHomePage> {
   late List<List<int>> _grid;
+  int _selectedRow = -1;
+  int _selectedCol = -1;
 
   @override
   void initState() {
@@ -122,8 +124,20 @@ class _MyHomePageState extends State<MyHomePage> {
   }
 
   void _onTileTap(int row, int col) {
-    setState(() {
-      _grid[row][col] = Random().nextInt(5);
-    });
+      setState(() {
+        if (_selectedRow == -1 && _selectedCol == -1) {
+          _selectedRow = row;
+          _selectedCol = col;
+        } else {
+          _swapTiles(_selectedRow, _selectedCol, row, col);
+          _selectedRow = -1;
+          _selectedCol = -1;
+        }
+      });
+  }
+  void _swapTiles(int row1, int col1, int row2, int col2) {
+    int temp = _grid[row1][col1];
+    _grid[row1][col1] = _grid[row2][col2];
+    _grid[row2][col2] = temp;
   }
 }