Endgame Coupling

Path: <= Endgame =>
  Difficulty: Advanced   Keywords: EndGame

Here's an example.

[Diagram]
Coupling on the edge  

Now White is in trouble: Black will either be able to cut at a, or start a dangerous ko by cutting at b.

[Diagram]
White's correct response  

When Black plays B3, White must answer this way, with W4.



The two white territories, on the left and right, are linked in a subtle relationship we can call 'coupling'.

[Diagram]
White's correct response (continuation)  

After that White can defend territory easily.

In this position the coupling effect is worth two extra points for Black.

Charles Matthews


Path: <= Endgame =>
Endgame Coupling last edited by Dieter on January 3, 2012 - 20:58
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