No code in these two, but lots of problem solving:

https://en.wikipedia.org/wiki/Rule_34_%28novel%29

I recently read Rule 34 by HNer Charles Stross. I liked it a lot.

Thanks Charles.

If you want to go old school, Rendezvous With Rama is great.

https://en.wikipedia.org/wiki/Rendezvous_with_Rama