> Dan wrote:
> > > Test case owl:6 is wrong, isn't it? If white plays B5 (the listed
> > > move) and black answers at B6, I don't see any continuation for
white.
> > > In fact I don't see any defense at all. Can someone confirm?
> >
> > How do you continue after W:C4?
>
> Black C1 kills. This position can be found on page 98 of All About
> Life and Death (by Cho Chikun).
>
> > It seems after black B6, white B4 makes a ko, but I don't remember
the
> > sequence and it is a difficult problem. I'll try to figure it out.
>
> No way. This is a weaker version of one of the L+1 groups (terminology
> from Davies' Life and Death) with a corner missing. A5 definitely
> kills.
>
> /Gunnar
>
>
Then I think we can omit this test case safely. There is no aji to find
at all on the surrounding.
SP Lee