Also discussed here : <a href="http://news.ycombinator.com/item?id=911119" rel="nofollow">http://news.ycombinator.com/item?id=911119</a><p>and here: <a href="http://news.ycombinator.com/item?id=970088" rel="nofollow">http://news.ycombinator.com/item?id=970088</a><p>Link to challenge site:
<a href="https://networkchallenge.darpa.mil/default.aspx" rel="nofollow">https://networkchallenge.darpa.mil/default.aspx</a>