JoelR: White looks dead to me. I think the best effort is to start a ko with . White has no threats at a, b, or
, because it takes all three of them to live. So she must make a threat elsewhere.
,
ko threat and response,
@
unkx80: What about at b?
JoelR: Good point. should be at b. Then if White captures,
at
above, and we're in my variation 1, while if White blocks, we eventually wind up in variation 2. Shall I edit my diagrams, or start anew?
unkx80: There is no need to, I will create the solution page later. (I prefer to present the solution without all the ko fights, it makes my head spin.)
,
ko threat and response,
@
,
@
.
,
ko threat and response.
If captures at
,
at
and we're back to variation 1.
So makes an eye, and then
@
,
,
threat and response,
@
. After
we're in temporary seki, until Black kills the group on the right.
If connects, then he must fight the ko to live. Even though he has an eye, White's outside liberties are too much.