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Four die but six live
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    Keywords: Life & Death, Proverb

On the third 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




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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.