[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Referenced by
CriticalNotchers

 

213WN notcher
    Keywords: Life & Death

[Diagram]
213WN

This is an unsettled critical notcher. Anything weaker is dead. But how to live ? By playing a or b ?


[Diagram]
213WN Failure

B1 may be the first move to occur to us. However, White makes a cunning placement at W2 and descends with W4 to create shortage of liberties .After B7, White starts a ko for the life of this group. [1]


[Diagram]
213WN

B1 is the vital point here: it makes two sure eyes at the circled points.



Dieter


[1]

[Diagram]
213WN Failure?

[Diagram]
213WN Failure?

Dieter: And yes indeed again. I was reading Cho's All about life and death when I realized I made another mistake on SL. And yes I knew my dear friend and watchdog unkx80 would be fast and sharp.



This is a copy of the living page "213WN notcher" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.