I've been doing a few AHC's (Atcoder Heuristic Contest) recently, and I really like them. So I wanted to do more, but I can't really find any heuristic-based contests.

I've looked at Google Hashcode, but most of the problems cannot be submitted to an OJ, you have to make a score-checker yourself.

Are there any other contests that I can use to practice for AHC?