Black can save all his stones. Both and
are tesuji moves that allow all the stones to be saved. Note that if
is played anywhere else, then White can catch some Black stones in a connect-and-die. The result is that Black can get a sente seki.
...ok, just the order is a little bit confused: W would play 4 - 6 - 2 - 8, otherwise B plays 3 just one position north!