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Subject: Re: How you judge in your program: "opening", "middle game", "end game"

Author: Shep

Date: 02:25:26 01/28/00

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On January 27, 2000 at 10:40:05, Jari Huikari wrote:

>Where you consider the position of a game changes to middle game / end game?
>
>opening == most pieces haven't moved yet ? / opening book not ended yet ?
>end game == few pieces left ?
>middle game == neither of the two above ?

I suppose some programs have a more fine-grained approach to this.
Tiger for example divides the game into several "phases" (more than 3 for sure
:) according to the material on the board, and different evals
(/extensions/pruning/...?) are fired off according to the phase the program is
in.
In the DOS version, it would show "Phase x/y"; in Rebel Tiger, the best way to
see it is when the eval suddenly jumps from like "+1.10" to "+0.20" (or vice
versa) after a capture has occurred. (Contrary to Fritz, this is _not_ due to
any preprocessor oddities. :)

---
Shep



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