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Subject: Re: Fritz5 missed a win against Chesstiger in the wmcc in paris

Author: Thorsten Czub

Date: 23:50:54 07/31/98

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On July 31, 1998 at 22:51:18, blass uri wrote:

>position:
>2r2rk1/2q2pP1/p1b1pp2/1p6/4P3/2Np3P/PPP3Q1/1K4R1
>white to move.
>
>Fritz5 arrived to a winning position because it has a better positional
>understanding.

Fritz has no "positional understanding".

You believe it has, but it hasn't.

>Fritz5 played 25.cxd3 and made a draw when 25.Qd2 is winning for white
>
>Fritz5 using 131072Kbytes hash tables needed almost 30 minutes to find
>Qd2
>Junior5(16 bit version for fritz) needed 10 minutes and 40 seconds
>using 31000 Kbytes
>
>This is on pentium200MMX

They used a p2/300 in Paris ! Also they had massive Hash-table-usage in Paris,
as far as I knew.

The draw-by-repetition-bug is a known problem/phenomena with the fritz-engines.
The whole time in Paris Fritz had wired draw-lines and senseless repetition
stuff.
We made all our jokes watching the chessBase team sitting behind their
"randomn-draw-generator -machine".

>Genius3 needed 42 seconds to find Qd2 on a pentium100Mh with 15 Mbytes hash
>tables.
>
>I think the strong point of Fritz5 is positional understanding

Oh man, you really seem to have problems to differenciate tactics from
positional stuff.
You are the first guy I know who claims positional-understanding for fritz5.

Whats next ?! Extraterrestrians on the moon ?! Nessi in Loch Ness ?

>The weak point of fritz5 is the opening book.
>In tactics it is sometimes weaker and sometimes stronger than other programs

It is a finder. it is good in finding key-moves, but sometimes oversees easy
tactics because of massive pruning. HERE you are right, for the first time :-)

>In the first round against Isichess Fritz5 with white came out of the opening
>book with negative evaluation with white.

And ?! The book is NOT tuned for Fritz5. It is a quantitative approach, isn't it
?!

>I believe fritz5's opening book has too many lines stupid humans played.

Thats true. All books that were melted out of databases have this "problem".

>It is better to delete lines Fritz5 does not like from the opening book of
>fritz5.

It needs a person to do so, that has to be paid for the job.


>Uri



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