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Subject: Re: Acquiring the Hiarcs 7.32 engine with Fritz 5.32 (or the reverse)

Author: Mark Ryan

Date: 17:51:33 08/06/99

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On August 06, 1999 at 01:56:36, Steve Schooler wrote:

[snip]
>  The new 32Bit version of Hiarcs does not clear its hash tables between
>  moves which makes it fantastically suited for the automated backward
>  game analysis in the Hiarcs7.32 user interface. In backward analysis, a
>  program with persistent hash tables knows about the further game
>  continuation and thus looks much deeper.  And supported by position
>  learning you can show the program the dangers of a variation which it
>  would normally stumble into in analysis and thus force it to look for
>  superior alternatives.
>
>the above excerpt suggests that the Hiarcs 7.32 interface allows
>"automated backward game analysis", while the Fritz interface does not.

Steve:  read the other responses carefully, as there is a lot of good info in
them.  I will add two comments.  First, my Fritz 5.16 does backward game
analysis, but it clears the hash tables between moves; I am told by CCC members
that Hiarcs 7.32 does NOT clear the hash tables between moves, which I would
guess would lead to a superior SYSTEM of game analysis (but not necessarily a
superior result - - that will depend also on the evaluator, etc.).  Second, for
actual playing strength, the results between the two engines seem to be
exceptionally close, based on a number of different competitions, and in spite
of their different styles.

Cheers,
Mark



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