1 files changed, 11 insertions, 0 deletions
diff --git a/README.md b/README.md
index 4251a83..522a27c 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,14 @@ PHPerKaigi 2022 用トークンプログラム at デジタルサーカス
 
 https://phperkaigi.jp/2022/  
 https://www.dgcircus.com/news/571
+
+
+
+
+<details>
+  <summary>
+    Do you want another hint for <code>riddle.php</code>?
+  </summary>
+
+  All of the PHPer tokens start with a number sign (`#`). Thus, the first number of `$token` will be converted into `#`.
+</details>