diff --git a/Backtracking/Sudoku.js b/Backtracking/Sudoku.js
index 6d529cc9dd..15d468a472 100644
--- a/Backtracking/Sudoku.js
+++ b/Backtracking/Sudoku.js
@@ -78,3 +78,4 @@ class Sudoku {
 }
 
 export { Sudoku }
+//nice code
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://patch-diff.githubusercontent.com/raw/TheAlgorithms/JavaScript/pull/1746.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://patch-diff.githubusercontent.com/raw/TheAlgorithms/JavaScript/pull/1746.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>