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

Author: Steve Schooler

Date: 22:56:36 08/05/99


Although my brief research makes Fritz an attractive buy, I am very intrigued by
the following excerpt from the Hiarcs 7.32 features documentation:

  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.

  Hiarcs7.32 accesses the Nalimov Tablebases in the search tree. This
  boosts playing strength in simple endgames dramatically. In contrast,
  Fritz5.32 only evaluates endgame databases at the root.

Questions:

1.  To experienced Hiarcs 7.32 users:  is the above excerpt for real?  I've
never heard of "backward game analysis" before.  How/when is this used?

To simplify responses to my remaining questions, please ASSUME that Hiarcs 7.32
search engine has an advantage re above excerpt, and that Fritz has faster
nodes/sec search engine.

2.  Rather than spending (approx.) $100 to acquire both, is it possible to
economically get the advantages of both under one umbrella (i.e. Fritz 5.32 with
the Hiarcs 7.32 search engine as an add-on, or the REVERSE)?  This question
really has two parts:

2a. Can the Hiarcs 7.32 search engine (only, with no interface) be purchased for
significantly less than the $48+ of the full Hiarcs 7.32 package, and then
"plugged into" Fritz 5.32 as an add-on.  Also included in question 2a is the
REVERSE, re buying and plugging Fritz engine into Hiarcs.

2b. Will the plug-in strategy of Question 2a truly consolidate both advantages?
For example, the above excerpt suggests that the Hiarcs 7.32 interface allows
"automated backward game analysis", while the Fritz interface does not.  I infer
that plugging the Fritz engine into the Hiarcs 7.32 package will achieve my
goal, while the reverse will not.  IS THIS TRUE?

3.  In the rec.games.chess.computers newsgroup, someone informally contrasted
the two search engines (Fritz 5.32 vs Hiarcs 7.32) by calling Fritz a tactical
monster, and indicating that Hiarcs more often "agrees" with the move actually
chosen by the Grandmaster.  Perhaps this relates to Hiarcs' "backward game
analysis" feature.  Intriguing, REQUEST FEEDBACK ON THIS.

4.  Taking everything above with a large boulder of salt:  if it is all true,
then I infer that Fritz is consistently superior in analyzing a "static"
position (i.e. setup a position and then say analyze).  REQUEST FEEDBACK ON
THIS.



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