here is another mistake. After
atari, White found that playing at a is suicide, so it is not possible to almost fill the eye space into a bulky five.
Black first will play
and
. This results in the same diagram as "White failure2" diagram, in which Black lives.
If
at
, then Black can even play tenuki.
This group is unsettled. If White first, the group is killed; if Black first, the group lives.