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Subject: Re: What is the rating of Virtual Chess II ?

Author: Andreas Stabel

Date: 01:34:09 11/14/00

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I just recently tested VC II, and I must say that it look strong in short
time controls, but I used it to analyse a game with a couple of minutes to
several hours of thinking time pr. move. What I saw then was that VC II has
terible move ordering when thinking for a long time. I don't know if VC II
needs hash hits to be able to perform sensible move ordering or if it is
some bug. In a position where a rook could be hit by a pawn and thereby
cause a cutoff in the search very quickly, VC II kept trying moves like
pushing the pawn forward first and this caused it to almost completely
stop on ply 11. This was not just something that happened in one position,
but it happened all the time in several of the moves of the search.

I was a bit surprised by this since it seems to play very well with
thinking times of a couple of minutes pr. move.

Best regards
Andreas Stabel



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