Alex Weldon: If ko threats favor Black, I don't see any perfect moves for White, because a doesn't seem to work. The best I can come up with is this. threatens a ko for the corner at
, so Black connects there, and
connects the White group to safety outside, because
and
have a monkey jump relationship, and so can't be cut apart.
I don't see any way to connect out if White plays at a, but maybe I'm wrong? The problem with
here is that if Black has better ko threats, he can play
somewhere around
to prevent connection, and then
at
starts a ko which Black takes first.