diff --git a/NeetCodeRoadmap/Arrays_and_Hashing/36_Valid_Sudoku.py b/NeetCodeRoadmap/Arrays_and_Hashing/36_Valid_Sudoku.py
index 3251743..c41ed10 100644
--- a/NeetCodeRoadmap/Arrays_and_Hashing/36_Valid_Sudoku.py
+++ b/NeetCodeRoadmap/Arrays_and_Hashing/36_Valid_Sudoku.py
@@ -3,10 +3,14 @@ def isValidSudoku(board):
     :type board: List[List[str]]
     :rtype: bool
     """
-    x = []
-    y = []
-    for x in board:
-         
+    temp = []
+    for x in range(len(board)):
+        for y in range(len(board[x])):
+            if y not in temp:
+                temp.append(board[x])
+            else:
+                return False
+        
 
 print(isValidSudoku([["5","3",".",".","7",".",".",".","."]
 ,["6",".",".","1","9","5",".",".","."]