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Subject: Re: Pawn promotion defense

Author: Inmann Werner

Date: 01:37:57 10/08/99

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On October 07, 1999 at 20:37:18, James Robertson wrote:

>On October 07, 1999 at 19:51:56, Scott Gasch wrote:
>
>I know how you feel. If my program doesn't win in the middlegame, it doesn't win
>at all.
>
>James

Welcome to the club, James :(

I always have the same problem. Deep search helps most, but not always. I tried
with many extension but failed. Now I only have the extension at going to row 7.
In evaluation, there could be done much, especially if you hash the pawn
structure :)

-A code evaluating simple pawn race helped much. (clear)
-looking, if two free pawns together can outrun the king. (clear)
-isolating the structure to KPK and looking if it works...(gives hints..)
-looking at the kingpositions together with the passed pawns (also if there is
some (not much) material on the board. (????)
-blocking is always good ( nearly always)
-using TBs, especiall 5-piece :-)

( all together not really "correct" and not enough....)

All together works a little, and so the Endgame is not as poor as before, but
play against Crafty in endgame, and you get crashed!!!

The bigger problem, for me, is the pawn structure. In many games against Crafty,
I recognized, that my program comes into the endgame with a not so good pawn
structure than Crafty, who soon gets an outside passed pawn........

Much to do.......

Werner



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