Four die but six live

    Keywords: Life & Death, Proverb

On the third line or in the corner on the second line a string of four stones is dead, and a string of six stones is alive. A string of five stones lives or dies according to sente.


[Diagram]

Four stones on the third line die

Black tries to expand his eyespace with B1 and B3, but White plays W2 and W4 and Black dies. B3 at a or B5 is met with W6.


[Diagram]

Six stones on the third line live

When Black has six stones in a row, White can not kill the stones. W1-W7 fails after B8.


Can someone show how to live or kill with five ?

Isn't this an application of the above? With 5, whomever has sente can effectively reduce it to 4 or expand to 6. No?


Slowman: How about this? (Please check it :-))

[Diagram]

Five stones on the third line : B sente

[Diagram]

variation: 6 at 9



This is a copy of the living page "Four die but six live" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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