Beginner Exercise 288 / Solution

Sub-page of BeginnerExercise288
[Diagram]

Solution

Black fights a ko for life.


[Diagram]

Failure

Black can secure an eye at the bottom with B1, but then White will destroy the eye on top with W2 and kill the whole black group. After that, black is reduced to one eye: a and b are miai.

[Diagram]

This W2 also kills (black c does not make an eye: it's auto atari met by white d) but is inferior, giving black one more ko threat.

[Diagram]

Failure

This looks like another way to make ko ... except that a is a false eye, so black is dead in this diagram. White could also play W2 at W4 (next diagram): in either case, black can't make a second eye at the bottom.

[Diagram]

Variation for W2

If black a next, then white b. Or if black b, then white a.



This is a copy of the living page "Beginner Exercise 288 / Solution" at Sensei's Library.
(OC) 2023 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About