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Subject: Re: gothmog's eval

Author: Tord Romstad

Date: 04:36:25 02/17/04

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On February 17, 2004 at 04:53:54, martin fierz wrote:

>hi tord,

Hello, and thanks for the comments and suggestions!

>two other things i noticed:
>
>-> gothmog 0.4.5 evaluates KRN vs KR as about +4 for KRN. it's usually a draw
>though... i didn't check, but you should, KRB-KR, KR-KB, KR-KN - all usually
>draws. this should be easy to fix

I think you must have confused Gothmog with some of your other sparring
partners here, or you are using a version much older than 0.4.5.  The score
in KRNKR endgames should never be more than about +1 pawn (usually less)
for the stronger side, unless I have some bug.  I tested several different
KRNKR endgames now just to be sure, and I didn't notice any problems.

The other endgames should also all give drawish scores.  The only exception
is KRKN, where the stronger side sometimes is given a big plus score if
the defending king and knight are far apart and the defending king is
on or near the edge of the board.

>-> gothmog 0.4.5 is quite happy with pushing pawns in front of it's own king.
>IMO that is more often bad than good...

You are right, it is a bit too happy to push pawns in front of the king.
Sometimes it results in some interesting and attractive games, though.

Tord




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