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Subject: Re: sliding attacks in three #define

Author: Dan Ellwein

Date: 21:47:55 04/11/04

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On April 12, 2004 at 00:09:48, Christophe Theron wrote:

>On April 11, 2004 at 13:52:59, Tom Likens wrote:
>
>>On April 10, 2004 at 21:53:17, Christophe Theron wrote:
>>
>>>On April 10, 2004 at 15:55:17, Tom Likens wrote:
>>>>
>>>>I'm not sure where I come down on the bitboards vs. non-bitboard
>>>>architectures.  My engine is a bitboard engine, but that doesn't
>>>>necessarily mean that the next one will be bitboard based.
>>>>
>>>>I don't believe though, that because no bitboarder has topped the
>>>>SSDF list that this really constitutes any kind of proof.  My strong
>>>>suspicion is that if all the top commercial programmers converted
>>>>over to bitboards tomorrow (yourself included) that *eventually*
>>>>their new engines would again rise to the top of the SSDF.  I'm
>>>>beginning to suspect that creating a strong (i.e. world-class) engine
>>>>involves a helluva lot more than just the basic data representation,
>>>>but instead involves...
>>>>
>>>>1. 24/7 dedication
>>>>2. A *real* way to measure progress
>>>>3. A selective search strategy that works 99.99999% of the time
>>>>4. Attention to about 2^64 minor details
>>>>5. A failed marriage (okay, maybe this is extreme but you see the point)
>>>>
>>>>regards,
>>>>--tom
>>>
>>>
>>>
>>>Number 5 (or something close) was the reason why Tiger has made such a progress
>>>between 1997 and 1999. :)
>>>
>>>Number 2, seriously, is worth spending several months on it.
>>>
>>>
>>>
>>>    Christophe
>>
>>This has been my main focus over the past few weeks.  It's become readily
>>apparent to me that the improvement slope from here on up is much steeper
>>and I rather not waste my time implementing features that I can't properly
>>test.
>>
>>regards,
>>--tom
>
>
>
>That's the secret of real professional chess programmers.
>
>When you have a good testing methodology, you do not need to be a genius
>anymore. I mean you do not have to rely on your genius anymore. You just try any
>strange idea and see if it works or not. All you need then is a lot of time (try
>dedicating 5 computers or more to the task, and let them run 24/24) and some
>cocai... I mean cafeine. :)


I find that a nice, hot cup of tea and a some yogurt (yoplait) does wonders for
the soul...

Dan
>
>
>
>    Christophe



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