A chess puzzle I made a while back ( Remade because of my stupidity)

EDIT: I made the board from whites point of view instead of the black point of view, so here is me remaking it correctly. Sorry for the confusion.

It is Black to move and win. The puzzle is a 9-move sequence. 
Sorry if this looks a bit funky; this is my first time making an announcement. I made this puzzle a while ago by now and I originally just shared it with a few family members and friends. But I decided now to show it here too.

Just write the answer in the comments if you want to and can find it (without using the engine obviously). : )