For future reference you should take a DNA test. There are several companies that do them. The results will give you an ethnic breakdown. For Chechen, however, it will probably read generically as from the Caucasus region. If your dad is part ethnically Kazakh, it might read as Asian, or Central Asia. You already know this, but you will find out more about your mother’s side this way. It would be interesting for you to know. If your mother was from Africa or was partially African, then it will tell you. Same thing if your mother was South Asian. These tests give a percentage breakdown. They are very disappointing to those who think they have Native American ancestry and find out otherwise!