xela: I'm wondering whether , threatening to escape, is sente.
xela: If yes, this looks straightforward.
xela: But what if white plays here? This is what I've worked out so far...
xela: ... so I think black should play here. But there are a lot of variations: white could try 'a' or 'b' next (of course after taking the ko and forcing black to use a ko threat).