White dies http://www.hitachi.co.jp/Sp/tsumego/igo122/121ae.htm
However, it looks like White can make ko:
hnishy: at captures the four White stones, doesn't it?.
xela: I've added a diagram later to show this variation.
kmr - yes, it looks like ko is not possible to achieve this way. After 5 at 6, white cant save four lower stones. White is dead.
If black plays here, then the stones are captured
Referenced byHitachiNumber121