diff --git a/medium/move_pieces_to_obtain_a_string.py b/medium/move_pieces_to_obtain_a_string.py
new file mode 100644
index 0000000..34747dc
--- /dev/null
+++ b/medium/move_pieces_to_obtain_a_string.py
@@ -0,0 +1,27 @@
+# https://leetcode.com/problems/move-pieces-to-obtain-a-string
+
+class Solution:
+    def canChange(self, start: str, target: str) -> bool:
+        length = len(start)
+        start_char_list = []
+        target_char_list = []
+        for i in range(length):
+            if start[i] != '_':
+                start_char_list.append([start[i], i])
+            if target[i] != '_':
+                target_char_list.append([target[i], i])
+
+        if len(start_char_list) != len(target_char_list):
+            return False
+
+        while len(start_char_list) > 0:
+            start_char, start_index = start_char_list.pop()
+            target_char, target_index = target_char_list.pop()
+            not_okay = start_char != target_char or \
+                (start_char == 'L' and start_index < target_index) or \
+                (start_char == 'R' and start_index > target_index)
+            if not_okay:
+                return False
+
+        return True
+