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Subject: Re: Anand comment about Deep Blue

Author: Tom Kerrigan

Date: 03:19:55 01/13/00

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On January 12, 2000 at 01:38:14, stuart taylor wrote:

>  But the greatest players have to make the greatest moves, and when the
>machine is already programed with almost any possible 20 greatest first
>moves in any game, that's already half the game in the machines pocket.

No. Nobody knows what the greatest moves are.

I have seen a million posts here saying, "this game was lost due to a bad line
in program X's opening book." If you go to a computer chess tournament, you hear
this complaint frequently.

The fact is, you don't simply download a few gigabytes of PGN files and all of a
sudden your program plays openings perfectly. It is very difficult to keep your
program from playing the s****y moves. It is very difficult to make your program
play openings that it is good at. It is very difficult to keep people from
exploiting holes in your opening book and opening book algorithms.

IMHO, the opening book is a necessary evil. It is a crutch to keep the program
from playing the same moves, and therefore losing every single game it plays.
None of the programmers I know like working on their opening books. None of them
get really excited about terrific new opening book algorithms. Basically, it's a
feature that we would not have unless it's necessary.

-Tom



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