Lonestar: After , White cannot get a second eye, as the following two diagrams show.
lavalyn adds some more diagrams
Jacob4Jesus: After only a and b matter. They are miai to kill. N o matter what W does should play on one of these. After white is dead and may be played elsewhere. (Except the first diagram case)
Reuven: Not at all sure if it's appropriate at all but perhaps the problem could start a bit earlier:
Taking the position one move back like this also results in a single correct move, leading to the discussion above.