Problem Classifier for Codechef

Thanks to codechef community there are lots of different problems to solve in codechef practice section. But they are not classified based on algorithm used to solve the problem. If I were to solve problem related graph I had to open every problem and see if it can be solved using graph.

So I was wondering if there exist any problem classifier for practice problem on codechef out their on the internet. Just like ther are problem classifier for spoj (spoj), uva (uva).
If anybody knows any codechef classifier or find any classifier please do post, it would be great.