76.28.215.249: I hate goproblems.com! (2010-01-02 05:25) [#6861]

Their system seems buggy, as I try to filter problems to my rank it always jumps me to dan level problems. It's frustrating!

Please point me towards another site that I can study Tsumego with.

I have downloaded Cho Chikun's intermediate dictionary. Should I stick to the beginner one as a 15-16k (KGS)? Thanks!