Beginner Exercise 28 / Solution
![[Diagram]](../../diagrams/9/953012263181c007256618da96bfe1e7.png)
Ko for life - Black captures first
The sequence from
to
yields a ko for life. Black cannot connect without removing the white stones because of shortage of liberties.
Note that the order of
and
can be interchanged.
![[Diagram]](../../diagrams/23/d784be2207c9490bc341735e3c6e3286.png)
Black fears ko - and dies for it
To avoid the ko is impossible - here, White falsifies an eye so Black is left a cyclops.
![[Diagram]](../../diagrams/27/48e4e7000b3c0b0a8e64a297edfe42a1.png)
Resistance, variation - 5 at 3
Again avoiding the ko yields only death for Black.
![[Diagram]](../../diagrams/51/13c77c405a889edeefa071f0d7cc6a2e.png)
Failure 1
The throw-in here doesn't work - the marked point will become a real eye for the corner group, so the two disconnected black groups will have one real eye each and a shared eye - and thus live.
![[Diagram]](../../diagrams/40/99385abe2056f0f23bcfe9b8190e9133.png)
Failure 2
A similar result occurs if White approaches from the side.
![[Diagram]](../../diagrams/52/1318f3a2b3a221de2e51bf69fe304888.png)
Black almost lives =)
![[Diagram]](../../diagrams/35/778508373b97d3939877b221ebc991f8.png)
Black Lives
is a mistake
![[Diagram]](../../diagrams/52/080babae4d143d7b0ce70681378787e3.png)
Black Dies
force black to dissolve eyes
![[Diagram]](../../diagrams/16/16863da50b6a77bf3ceac67ab22205cf.png)
Black Dies
If black doesn't play at 2, white can ko and kill the left side of black block
![[Diagram]](../../diagrams/1/cd0934ac2b15b4b0dcc68518cb5a45ce.png)
Black lives
unkx80: The mistake in the earlier diagram is
. Instead of a,
here lives.