Vital point example
To
White has yet to establish a base. Textbooks will tell you that a is the vital spot for Black to attack White, threatening b.
In an example of the proverb my opponent's vital spot is my vital spot, White may well play at a to make shape:
fills the marked Ko
although this sequence appears more common at the top level. the sequence a,b,c,d follows.
![[Diagram]](../../diagrams/11/aa189759e9b161b453bc398a5161f8e7.png)
![[Diagram]](../../diagrams/23/58255bca15dd0f7f9c4cdf9ac3340c2a.png)
![[Diagram]](../../diagrams/6/3d4da9e2644346c2026c5fc67725ae6e.png)
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