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Subject: Re: Junior thoughts

Author: Amir Ban

Date: 12:21:54 07/13/04

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On July 13, 2004 at 15:11:33, Uri Blass wrote:

>On July 13, 2004 at 14:41:30, Joachim Rang wrote:
>
>>On July 13, 2004 at 13:23:52, Amir Ban wrote:
>>
>>>On July 13, 2004 at 05:13:55, Joachim Rang wrote:
>>>
>>>>Hi Amir,
>>>>
>>>>congratulations for the title and many thanks for your report and opinions about
>>>>the WCCC. Although I'm a Shredder-Fan I must admit that I am always stunned to
>>>>see with which style and force Junior manages to win. Although it feels like
>>>>your playing style is more unbalanced and less complete than that of Shredder
>>>>(you wrote it feels almost "perfect") I think you have discovered something
>>>>special, which other programs have not. I'm always impressed how Junior operates
>>>>with its major pieces against the enemy king especially in the late
>>>>midgame/beginning endgame. I think Junior knows a lot more how to exploit an
>>>>exposed king when the position is open and queens are still on board than other
>>>>programs do.
>>>>
>>>>Some questions: Does you focus in your work especially on long time controls on
>>>>superfast machines? I ask since Junior 8 seems relatively better on longer time
>>>>controls than on blitz in contrast to Hiarcs 9 for example. Do you think that in
>>>>_evaluation_ there are things that work differently in blitz and in longer time
>>>>controls (for search it is obvious that there is a difference)?
>>>>
>>>
>>>I don't know of a reason why things would work out differently at different time
>>>controls.
>>>
>>>Amir
>>
>>
>>thank you for your statement. There were some discussions about that, so I
>>wanted to here the opinion of the World Champion creator ;-). Of course for
>>search I find the theoretical explanation most likely that things work
>>differently on different time controls, since a lot of extensions make your
>>program tactically stronger in blitz time control but negatively affect the
>>branching factor, which hurts in longer time controls.
>>
>>Good luck with further progress and thanks again
>>
>>regards Joachim
>
>There is clearly a logical reason that things can work different at different
>time control.
>
>Imagine that you have a type of positions that your program can get 90% from it
>at long time control but at blitz you get only 50% from the same type of
>positions.
>

This is begging the question.

Amir


>How are you going to evaluate it?
>
>If you play blitz then 0.00 may be the best evaluation because chances are
>equal.
>If you play long time control then it is logical to evaluate it as a clear
>advantage for yourself.
>
>Uri



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