Just to clarify, ITA's puzzles weren't all of mathematical / algorithmic tricks variety. I did one of them just for fun 3-4 years ago: "implement a scalable m

Just to clarify, ITA's puzzles weren't all of mathematical / algorithmic tricks variety. I did one of them just for fun 3-4 years ago: "implement a scalable multi-user chat server without using a framework like Netty/ACE/EventMachine". Unfortunately, at the time I couldn't move to Boston, so I never submitted my solution. Likewise there were puzzles that would appeal to web developers (e.g., build a typeahead web applications), machine learning/AI folks/etc...