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Re: [gnugo-devel] Dragon safety early in the game

From: bump
Subject: Re: [gnugo-devel] Dragon safety early in the game
Date: Wed, 28 Aug 2002 22:01:05 -0700

Arend wrote:

> This does not look reasonable to me. Hence we have to tune the above
> formula or the computation of the effective size. Another thing to note
> that defending E4 here is mostly interesting because J4 isn't alive yet
> (and it has a reasonable .weakness of 0.78). Maybe a strategic defense of
> a weak dragon could automatically trigger a strategic attack of a
> weak hostile neighbour.

This is potentially a powerful idea! 

The reason is that if a group had *two* weak neighbors the incentive
to expand it would be greater. In other words, GNU Go would tend to
play splitting attacks.

Splitting attack: If the opponent has two weak groups, you expand
your group between them. To make GNU Go understand this would be
excellent. A famous game with splitting attacks:

By move 38, white has 3 weak groups. Black plays to keep them
separated and eventually one of them must die.


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