[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Referenced by
BeginnerExercise128

 

Beginner Exercise 128 Solution
    Keywords: Problem

Solution

[Diagram]
White first to kill.

Karl Knechtel: I believe W1 is correct. B2 at b is answered by W3 at c, and b cannot capture three to make an eye - it's a matter of white's liberties rather than black's lack of them, however.


[Diagram]
White connects out, Black fails to make eyes

[Diagram]
White connects out, Black fails to make eyes (variation)

W7 at B4.


[Diagram]
White is persistent

With black cutting/trying to capture at c, as shown, white applies the same technique on the other side. Now there is a shortage of liberties situation which prevents black from cutting on this side.


[Diagram]
White is persistent (continued)

White gets to connect whatever black tries, and the best black can do is get a couple of simple kos on top, but these are not life.


[Diagram]
White is persistent (variant)

Of course the throw-in of B2 does no good either. Now the a points are miai to kill, producing results from the previous diagrams.



Failure

[Diagram]
Failure.

Attaching at W1 is not so good. After B3, the result is a ko, not as good as a direct kill.



This is a copy of the living page "Beginner Exercise 128 Solution" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.