flyingfisch posted this link in #omnimaga and I thought y'all might like it: http://adventofcode.com/

I'm going to try to do all of them on the right days, but I dunno if I'll have the time. Post your solutions to the problems in the thread. I'll update this post as I solve the puzzles

Instead of updating this post whenever I finish a new puzzle, I've put them all in a github repo: https://github.com/Ivoah/AdventofCode