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Subject: Re: How Rebel plays at SSDF the bare facts, just statistics and thoughts

Author: Robert Hyatt

Date: 18:52:03 06/16/98

Go up one level in this thread


On June 16, 1998 at 20:22:19, Enrique Irazoqui wrote:

>On June 16, 1998 at 19:16:46, Ed Schröder wrote:
>
>>>Posted by Enrique Irazoqui on June 16, 1998 at 18:02:56:
>>
>>>Not true. The first version of Fritz s autoplayer didn t allow some of the
>>>opponents to save their games.
>>
>>>As a consequence, Rebel, and only Rebel, could not learn.
>>
>>How do you know?
>>
>>Did you ask other chess programmers too then?
>
>What for? No other program that played against Fritz 5 in the SSDF matches went
>twice for the same losing line, except Comet32 in 2 games. All the other double
>games in there are the Fritz5-Rebel9 ones. Knowing what kind of aggressive
>learner Fritz 5 has and knowing that Rebel 9 did not behave like this in other
>matches, this losing double games indicate that Rebel's learner was the only one
>hampered by Fritz's autoplayer.
>
>But this was not the original point. The issue concerned the killer lines that
>Fritz 5 played againt Rebel 9. None at all, if you look at the evaluation when
>Fritz 5 leaves book. All posted, by the way.
>


I would add that I don't see how nor why alternating colors would affect a
learner.  It seems to be a badly flawed design if it does, because I'd like
to think that a learner would protect a program from playing the same
opening round three that it played in round 1 and lost.  And the last time
I played in a human tournament with Crafty, I had to alternate colors after
*every* game.  As a general rule, on the chess servers, this is also common
practice.

That's obviously fixable...



>>>Now, go figure if this is the fault of that autoplayer or if it
>>>is rather a design flaw of Rebel s learner.
>>
>>Come on!
>>
>>Who is not sticking to the general accepted auto232 rules here?
>>
>>And I should be responsible for that?
>>
>>This is the world up-side-down, no?
>
>No. No one says games must be played all black first and then all white. F5
>autoplays alternating colors in every game, as in human matches. Rebel's has
>been so far the only learner suffering because of this or because it couldn't
>save its games. Is this F5's fault because it uses standard human procedures but
>non-standard auto232? Or is it Rebel's fault? As I said, go figure...
>
>Enrique
>
>>- Ed -



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