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Subject: Re: Junior 8 plays differently than it analyzed!!

Author: Brian Kostick

Date: 18:23:27 07/31/03

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On July 31, 2003 at 20:43:43, Eduard Nemeth wrote:

>
>Hello!
>
>First my original german text:
>
>Junior 8 spielt anders als er analysiert!!
>
>Ich habe jetzt, glaube ich, 5 games gegen Junior 8 gepostet. Die letzten 2
>Partien habe ich nun analysiert und mir ist es nicht gelungen, sie im analyse
>Modus zu reproduzieren. Mir persönlich erschien es so, dass Junior 8 oft manche
>Moves wie per Zufalls-generator oder als 2. best-move gespielt hat.  Auch die
>Suchtiefe ist eine Andere im Analysemodus als beim Spiel. Hat sich Amir Ban da
>etwas raffiniertes dabei gedacht?
>
>(Diese Feststellungen bezeugen auch die Echtheit meiner games)
>
>English (Translator) :
>
>Hello!
>
>Junior 8 plays differently than it analyzed!!
>
>I have now, I believe, 5 games against junior 8 post.  The last 2 games I
>analyzed now and me it did not succeed to reproduce it in analysis the mode.  Me
>it appeared personal in such a way that junior often played 8 some moves as by
>random number generator or as the 2nd best move.  Also the search depth is
>another in the analysis mode than with the play.
>
>Did Amir Ban imagine somewhat refined there thereby?
>
>(these statements testify also the authenticity my games)
>
>Eduard


Hello Eduard,

  This has been seen with other ChessBase engines as well. It was a topic of
discussion here sometime ago when several of us were a running test suite and we
noted conflicting results. It may be related to hash tables somehow (I am
guessing). I think we agreed to set time control to XXX seconds and press 'Go'
and record the move after the given time. I would not doubt the authenticity of
your games based on Infinite Analysis or Analysis Mode. Also Analysis Mode might
not capture the move played in the game based on the time factor.

Regards,
BK



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