tywin: This looks like the main line. If Black connects at , White plays at a and Black still has to fight the ko.
unkx80: One final question for people attempting this problem: Is this an alternative solution?
Zephi: I'd have to say this isn't a solution because black (at this point) doesn't look as if he needs to capture. He could probably play at with no negative repercussions that I can see.
unkx80: Correct. =)