Beginner Exercise 28 / Solution
![[Diagram]](../../diagrams/34/c8dc37182cf1ff20fb32d112c853bf8e.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/34/2b6a136503b2ed944da53d722c5a1bd9.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/43/fc1c71dcd0341c391ba2f8ca7b7e0f83.png)
Resistance, variation - 5 at 3
Again avoiding the ko yields only death for Black.
![[Diagram]](../../diagrams/35/b511eaf640e2cd25ad0c00d04fa8077f.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/39/949003b5469517bd1696bd0e218e653c.png)
Failure 2
A similar result occurs if White approaches from the side.
![[Diagram]](../../diagrams/9/4db31f77bbffe73bbbf575ef3d6d4461.png)
Black almost lives =)
![[Diagram]](../../diagrams/46/0689ae2af70456512b2598f02d59fb34.png)
Black Lives
is a mistake
![[Diagram]](../../diagrams/42/b87feaac3a4f8a8c68321f9d3b2a167f.png)
Black Dies
force black to dissolve eyes
![[Diagram]](../../diagrams/31/30a2a852d7eed16078b3e49553860529.png)
Black Dies
If black doesn't play at 2, white can ko and kill the left side of black block
![[Diagram]](../../diagrams/9/f28b32dc8ad18bc8f0d0be4d3f2c618e.png)
Black lives
unkx80: The mistake in the earlier diagram is
. Instead of a,
here lives.