Hikaru79: I think that the Black throw-in at
kills the group, although not unconditionally. White has a couple of choices.
![[Diagram]](../../diagrams/9/4eb6e707d5ee9cf146370bf03a0a5c99.png)
Seki or throw in ko
Bill: After the first diagram, White can play
. At this point either player can make seki or throw in to make a ko (which the opponent takes first).