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Re: [Bug-gnubg] Idea for encoding 2-sided database

From: Jim Segrave
Subject: Re: [Bug-gnubg] Idea for encoding 2-sided database
Date: Mon, 28 Mar 2005 20:04:32 +0200
User-agent: Mutt/

On Mon 28 Mar 2005 (16:47 +0100), Ian Shaw wrote:
> Could we reduce the size of the two-sided database by omitting gin
> positions?
> Gnubg could assume that if the position was inside the database space
> but the result was not stored, then the position is gin. A simple 0-ply
> evaluation could be used to verify who has won, and as a sanity check.
> I don't know how much effect this would have, but it would have greater
> benefits for the larger databases because more positions would be gin.

I've not looked at the code, but I think it calculates where to look
as a fixed function of the current position. If that's the case, then
you need different indexing of the database, which might not be a gain.

Jim Segrave           address@hidden

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