diff --git a/content/_index.md b/content/_index.md
index 497f707..7be3f10 100644
--- a/content/_index.md
+++ b/content/_index.md
@@ -126,11 +126,6 @@ This image should explain the difference:
 
 As for where to start, start with learning how to write hiragana properly:
 
-<!-- {{< youtube wD3FJgij79c >}} -->
+{{< youtube wD3FJgij79c >}}
 
-<div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;">
-  <iframe allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen="allowfullscreen" loading="eager" referrerpolicy="strict-origin-when-cross-origin" src="https://www.youtube.com/embed/wD3FJgij79c?autoplay=0&controls=1&end=0&loop=0&mute=0&start=0" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" title="YouTube video"
-  ></iframe>
-</div>
-
-{{< /secondary >}}
\ No newline at end of file
+{{< /secondary >}}
diff --git a/content/challenges/173.md b/content/challenges/173.md
deleted file mode 100644
index ce18716..0000000
--- a/content/challenges/173.md
+++ /dev/null
@@ -1,111 +0,0 @@
----
-japanese:
-  - - - pos: noun
-        text: ホログラム
-      - pos: particle
-        text: の
-      - pos: adjective
-        text: ような
-        dictionary: 様な
-      - dictionary: ~
-        text: "　"
-      - pos: noun
-        text:
-          - 海: うみ
-      - pos: particle
-        text: を
-      - pos: verb
-        text:
-          - 見: み
-          - つめていた
-        dictionary: 見つめる
-  - - - pos: phrase
-        text:
-          - 音: おと
-          - もなく
-      - pos: verb
-        text:
-          - 沈: しず
-          - む
-      - dictionary: ~
-        text: "　"
-      - pos: noun
-        text:
-          - 光: ひかり
-      - pos: particle
-        text: が
-      - pos: verb
-        text:
-          - 遠: とお
-          - のく
-        dictionary: 遠退く
-  - - - pos: noun
-        text:
-          - 息: いき
-          - 苦: ぐる
-          - し
-        dictionary: 息苦しい
-      - pos: noun
-        text: さ
-      - pos: particle
-        text: さえ
-      - pos: verb
-        text:
-          - 忘: わす
-          - れさせて
-        dictionary: 忘れる
-      - pos: verb
-        text: くれる
-        dictionary: 呉れる
-      - pos: particle
-        text: から
-  - - - pos: noun
-        text:
-          - 水: み
-          - 面: なも
-      - pos: particle
-        text: に
-      - dictionary: ~
-        text: "　"
-      - pos: noun
-        text:
-          - 身: み
-      - pos: particle
-        text: を
-      - pos: verb
-        text:
-          - 委: ゆだ
-          - ねて
-        dictionary: 委ねる
-  - - - pos: noun
-        text:
-          - 地: ち
-          - 平: へい
-          - 線: せん
-      - pos: particle
-        text: の
-      - pos: noun
-        text:
-          - 向: む
-          - こう
-          - 側: がわ
-      - pos: particle
-        text: まで
-      - pos: verb
-        text:
-          - 漂: ただ
-          - って
-        dictionary: 漂う
-      - pos: verb
-        text:
-          - 行: ゆ
-          - き
-        dictionary: 行く
-      - pos: verb
-        text: たい
-song:
-  english: Holographic Seascape
-youtube: SkTH9smatp0
-suggester: mochamoko
-date: 2024-09-10
----
\ No newline at end of file