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Subject: Re: Fritz 7 (No MMX) is not Fritz 6 !!

Author: José Carlos

Date: 05:55:25 11/09/01

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On November 09, 2001 at 07:24:09, Uri Blass wrote:

>On November 09, 2001 at 05:04:40, Matthias Gemuh wrote:
>
>>On November 09, 2001 at 04:02:33, Uri Blass wrote:
>>
>>>On November 09, 2001 at 03:54:34, Matthias Gemuh wrote:
>>>
>>>>
>>>>In the CSS forum (german), it has been revealed that Fritz 7 (NoMMX) is actually
>>>>Fritz 6.
>>>>Versions (and file sizes) are:
>>>>
>>>>Fritz 6 = 6.0.0.74 (304 KB)
>>>>Fritz 7 (NoMMX) = 6.0.0.76 (356 KB)
>>>
>>>
>>>I think that 6.0.0.76 is different than 6.0.0.74
>>>
>>
>>Of course, they are different. One is Fritz 6c, the SHOULD BE Fritz 6d.
>
>I do not think that you have the right to decide about the names.
>Chessbase decide about the name and if they call it Fritz7 then it is Fritz7.
>
>The name of the file is not important for the name of the engine.
>They could use the name 88.0.0.888 if they wanted.
>In that case It is still Fritz7 and not Fritz88.

  Of course the name is not important. I think what he means is that Fritz7 MMX
and no MMX produce different moves, and that no MMX is closer to Fritz 6. Also,
the internal version number means a lot. If they call it internally 6.0.0.76,
that usually means is rebuild #76 of version 6 (minor changes). After a major
change, the name it 7.xxx.
  This is to be expected bu, of course, the only way to know if no mmx version
is clearly better than F.6 is testing.

>It is not important if there is only a small change in Fritz6 to get Fritz7.
>If they change one line of code and make the engine 200 elo better than people
>are going to be happy to buy the new engine.

  True. Strenght is the important thing. But nobody improves an engine 200
points buy changing a line of code... I could worsen it though... :)

>It is an extreme example
>If you want to think about more realistic example then if they change 1% of the
>source code and make it 50 elo better than I will be happy to buy it.

  Nobody cares about the % of change to the source code. People buy new versions
because they are stronger or the GUI has new/improved features.

>In the relevant case it seems that they even changed clearly more than 1% of the
>source code.
>
>Fritz6 is 304Kbytes
>Fritz7(no mmx is 356 Kbytes)

  And this is nonsense. The exact same source code can compile to different file
sizes depending on optimizations, compiler, operating system... Even a single
word like __inline can change the size a lot.

>This is a big change of more than 17% only on the size of the code and the
>change in the source code may be more than it because changing is not only
>adding source code.
>
>Uri

  José C.



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