Author: Kurt Utzinger
Date: 22:24:49 04/26/03
Go up one level in this thread
On April 26, 2003 at 20:18:23, Uri Blass wrote:
>On April 26, 2003 at 19:15:04, Drexel,Michael wrote:
>
>>Today I started an interesting experiment.
>>A match Chessmaster 9000 against Shredder 7.04 in Chessbase GUI with
>>over-optimistically settings for The King 3.23.
>>With this settings The King engine evaluates his positions almost always as
>>better for himself, except it is completely lost.
>>
>>Surprisingly a 30 game match ended:
>>Chessmaster 9000 - Shredder 7.04: 15.5-14.5 (+12 =7 -11)
>>5 min, AMD 2200+, ponder off, Remis.ctg, alternate colours
>>
>>I told The King that the own qeen is better than the opponents qeen, the own
>>rooks are better than the opponent rooks, the own bishops are better than the
>>opponent bishops and so on...
>>
>>Its over-optimistically evaluations dont hurt at all.
>>
>>The evaluations were way off but it nevertheless won the match and played a lot
>>of exciting games although it lacks resistance in worse positions.
>>Chessmaster played very strong in positions it had an advantage.
>>
>>Therefore I think it should be a good idea to have completely different
>>evaluations.
>>For clearly better positions an optimistically evaluation (Shredder obviously
>>has very high scores in such positions) and for worse positions a more realistic
>>evaluation.
>
>What is your definition os optimistically evaluation
>If you multiply the score by 2 when you have a clear advanatage then you also
>can describe it as an optimistically evaluation when you have a clearly better
>position.
>
>Deciding to evaluate your pieces as more than the opponent pieces can help only
>if without it you may trade to drawn endgame but in that case the problem is bad
>evaluation of endgames.
>
>If chessmaster is relatively bad endgame player then the idea of evaluating it's
>pieces as more than the opponents in better positions may be productive for it
>but not every program is relatively weak in the endgame.
>
>Uri
Hi Uri
The KIng is strong at endgames but does indeed like very complicated
and unclear situations.
Kurt
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