Ask HN: Hone your AI skills by solving challenges. Interested to participate?

I'm one of the founders of HackerRank and we're building a platform to<p>Currently, I'm going through various courses in Udacity/Coursera/edx, etc. and putting up challenges based on that (Tic-tac-toe to code min-max algorithm, etc.)<p>However, it's very unstructured and we're randomly adding games/challenges. If this is done in a structured way, it could very well build an engaged community of problem solvers interested in AI.<p>If any of you would be interested in helping me with the structure of the content or contributing/creating challenges, would love to chat.