Issues connecting to interactive problem server?

I am trying to tackle interactive games. such as #176 say 100. but the server seems to fail on me...

An error has been encountered in accessing this page.

1. Server: codeabbey.sourceforge.net 
2. URL path: /nim-game.php 
3. Error notes: NONE 
4. Error type: 404 
5. Request method: GET 
6. Request query string: NONE 
7. Time: 2016-07-13 17:55:26 UTC (1468432526)

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Is it just me?