diff --git a/python/6 kyu - Find the missing letter.py b/python/6 kyu - Find the missing letter.py
new file mode 100644
index 0000000..269cde6
--- /dev/null
+++ b/python/6 kyu - Find the missing letter.py	
@@ -0,0 +1,7 @@
+def find_missing_letter(cs):
+    k = ord(cs[0])
+    for c in cs[1:]:
+        t = ord(c)
+        if t - k != 1:
+            return chr(k + 1)
+        k = t