hotcoffee: It appears to be an undecided situation. I've tried to analyse this completely - if there are any mistakes I do apologise.
hotcoffee: If doesn't connect, white can capture 2 stones and black has dead shape (below). If at 'a', at and black is short of liberties.
If Black doesn't defend against the atari, then White will capture two stones with . By symmetry there are only 3 variations based on where is placed (excluding a sensible tenuki). As Black can only make a bent-3 or 2x2 square eyespace, he is dead. eg. in this position 'b' and 'c' are miai for the kill.
hotcoffee: Black lives with below. Two less obvious variations are below. For the unshown variations, if white ataris two stones, black connects and is alive.
There are several variations of white attacks, in most cases white has 3 ko-threats, before the aji is gone and black is untouchable.