diff --git a/notes.md b/notes.md
index 67cc9f6..ea383f3 100644
--- a/notes.md
+++ b/notes.md
@@ -2,6 +2,8 @@
 
 ## Checkpoint 1 Notes
 
+play_ttt.py is the class responsible for each of the beahviors
+
 Which class is responsible for each of the following behaviors?
 For each, explain how the behavior is accomplished.