Eight point Eye - Possible Ko

    Keywords: Life & Death, Ko
[Diagram]

White makes ko

Note: This line of play is usually not best for White. It is for demonstration purposes. An eight point eye is not enough to guarantee life.

Usually a is better for White than W3. Often it is right for Black to tenuki instead of playing at B2.

-- Bill Spight


Hmm, it looks to me like black can get a seki after W3 (B8 at B2):

[Diagram]

Black gets a seki



Alternately:

[Diagram]

Black gets a seki

Which is a way to get to Seki inside the bulky five, although it involves a 1-point mistake by White.

Presumably the seki is normally preferable to the ko for Black.

-- Evand


Bill: Oops! I analyzed this 9 years ago and had forgotten the niceties.

[Diagram]

White kills



Here is the main line:

[Diagram]

White makes mannenko


TJ Not sure if that one works, but I was working this up while Evand was editing...

Immediately re-edited and removed another diagram where black's play gets himself killed instead of a seki. The remaining one still looks good, though, no?

[Diagram]

Seki?

Bill: Black is dead.


This is a copy of the living page "Eight point Eye - Possible Ko" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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