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Subject: Re: Pro Deo in Arena

Author: Ed Schröder

Date: 08:20:37 09/03/04

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On September 03, 2004 at 03:25:35, Frank Quisinsky wrote:

>On September 02, 2004 at 20:19:39, Ed Schröder wrote:
>
>>On September 02, 2004 at 17:53:20, Frank Quisinsky wrote:
>>
>>>On September 02, 2004 at 17:28:18, Ed Schröder wrote:
>>>
>>>Hi,
>>>
>>>thanks Ed!
>>>
>>>Your words are nice to read for me:
>>>
>>>- A little bit against my bad conscience
>>> (Leiden 2000, or 2001).
>>>
>>>- mail to your beta testers in test time of Gandalf 5.1
>>>
>>>But nobady is perfect!
>>>In this time I made to many things and loosed in a lot of cases the feeling for
>>>the situation.
>>
>>Okay Frank, let's forget about the past and make a fresh new start, will you?
>>
>>My best to you,
>>
>>Ed
>
>Hi Ed,
>
>yes, that would be great!
>
>I have a little question Ed!
>Not the right thread but important for me.
>
>Since over one year I come back to my first years of computer chess. I try to
>reproduce my collection of favorite chess computers and played a lot games in my
>free time this year. I like the Mephisto chassi of Mephisto Milano, Berlin,
>Modena, Atlanta and have here all six types. My favorite is Mephisto Milano
>(like the playing style and the display information).
>
>The question I have:
>You created at last the following programs:
>
>Mephisto MMV (very tactical)
>Mephisto Milano (combination tactic and positional playing style)
>Mephisto Polgar (positional playing style)
>
>After all my tests for many years and in this times :-) I believe the best one
>is the Mephisto Milano but not in the SSDF. This my opinion about it and it
>would nice to know what you are thinking about it. I believe the way you go with
>the program style in Mephisto Milano is the way you search for your first "PC"
>chess programs. Your experiments with GM human games in the following years are
>a second good example. Do you think that the Mephisto Milano is the strongest of
>this three chess computers? Is this right that you try to find out the
>combination of positional and tactic playing style in your first PC chess
>program up to today in Rebel / ProDeo? With time we can see that the combinated
>engines are stronger with the tactical only engines. The hardware is faster and
>in the first years of computer chess the tactical programs have an advantage. So
>it's a little bit a sensation that the Milano and not the MMV is stronger chess
>computer (in my opinion).
>
>Your answer will be great for a lot of chess computer fans I know becuase this
>question is a long time questions if we played our tournaments. Have this
>discuss with my chess friend each time we play our tourneys. Perhaps you find
>the time for an answer.

I would rate the Milano as the best but between the 3 of them is not much
difference in strength, not more than 30 maximum 50 elo. The problem was that
since the Polgar I already had reached the limitations of the 8-bit processor
and its limited RAM and ROM and thus no big improvements could be expected.

Requests from me to H&G for more RAM and speed were declined and so they more or
less forced me to find my own way and move on to a new processor instead, this
against the express wish of H&G. My choice fell on the Archimedes RISC chip
which later was produced by H&G after all (known as the Mephisto RISC) after a
lot of juridical tug-of-war.


>Today we have the discuss that Rebel can be stronger with "only" more tactic
>(opinion from my chess friend, not my).

Tell your friend he is wrong, nowadays there is very little to gain with SEARCH
(in comp-comp) because even nowadays so-called amateur programs are real good in
that. Today the top programs win their games because of better chess knowledge,
this shift started 2-3 years ago.

My best,

Ed




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