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Subject: Re: junior6A strange findings

Author: Amir Ban

Date: 11:54:02 02/25/00

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On February 24, 2000 at 20:54:54, robert blackwell wrote:

>i was recently using junior 6 to analyse deep junior vs iiiscas, i was shocked
>by deep juniors 21 move 21.h4! this is a brilliant move. This particular move is
>found by junior6 but not junior6a till almost 8 min. I am scared that perhaps in
>some ways the patch may have made junior weaker. I have tried some other moves
>and it seems the unpatched junior was faster??. Can amir ban or someone please
>please clarify this. Thanks        :>

Chance may be all that is involved. In this position there are two strong
candidates, h4 and a5, which are evaluated almost the same. You can do two-move
analysis to see this. When there are two equally good moves, which move gets
selected may depend on things like the processor speed, time control, number of
processors and the previous contents of the transposition table.

The move h4 was played in the Illescas game by Deep Junior 6a on a quad Xeon 500
MHz.

Amir




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