Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Smarter programs not bigger TBs

Author: Jason Williamson

Date: 09:20:50 04/11/00

Go up one level in this thread


On April 11, 2000 at 09:33:23, Robert Hyatt wrote:

>On April 11, 2000 at 03:09:32, Jouni Uski wrote:
>
>>On April 10, 2000 at 20:18:36, Robert Hyatt wrote:
>>
>>>On April 10, 2000 at 17:22:09, Arndra L. Sharp wrote:
>>>
>>>>On April 10, 2000 at 15:52:18, Robert Hyatt wrote:
>>>>
>>>>>On April 10, 2000 at 11:20:51, Arndra L. Sharp wrote:
>>>>>
>>>>>>First of all let me state that I am not a programmer, just someone who enjoys
>>>>>>computer chess immensely.  I have seen a lot of posts that put down the Endgame
>>>>>>Turbo disks because they do not contain all of the TBs, in particular those TBs
>>>>>>after the pawn queens.  I think it a good idea to reduce the hard drive space
>>>>>>required for TBs by pruning those TBs that any good chess program can figure out
>>>>>>if its brain was not disabled.  It seems the real problem is that those programs
>>>>>>that use TBs turn off the permanent brain once the program is in a TB position
>>>>>>and then the program gets confused if after a pawn queens and the now simple win
>>>>>>(for good chess programs) is not in the TB folder.  This is something that the
>>>>>>programmers probably did not anticipate originally everyone has seen games where
>>>>>>this impacts the result. Now that this has been identified, why can't the
>>>>>>programmers tell their programs to follow the TB tree to pawn promotion and
>>>>>>reset the permanent brain at that point.  Many people have reported that the
>>>>>>programs that blunder with missing 5 man TBs play the same ending fine with 3
>>>>>>and 4 man TBs.  It just seems that the programs don't know how to think again
>>>>>>after they start down a tree and the tree ends before checkmate.  A bug fix by
>>>>>>the programmers would be more preferable than taking up another 5 gigs of hard
>>>>>>drive space.
>>>>>>
>>>>>>Arndra
>>>>>
>>>>>
>>>>>Crafty does this correctly.  But with the price of disk drives, holding all the
>>>>>3-4-5 piece files is now trivial...  40 gigs for 250 bucks is typical now.  You
>>>>>only need 8 gigs for _all_ the 3-4-5 piece files (compressed).
>>>>
>>>>Does anyone sell all the TBs on CDs?  Surely everyone who has them is not
>>>>generating them with the program that comes with the 32-bit Chessbase programs.
>>>>That would take several weeks and a memory ladened machine; I can't imagine
>>>>downloading 8 gig either.
>>>
>>>
>>>Not that I know of.  CDs are a poor way to distribute these things as the 8
>>>gig set would take almost 15 CDs...
>>
>>Actually just 10 CDs
>
>
>Check the contents of the CDs against my ftp site, directories three, four
>and five.  No way that will fit on 10 CDs unless someone has found a new way
>to cram > 750mb into an ISO9660 filesystem that will fit on one CD.  Some are
>obviously omitted.

Overburn em.
You can get about 800 megs on a 80 minute cd with about a 75-80% chance of not
making a coaster if your software and burner are decent quality.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.