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Subject: Re: Robert Deep Blue question

Author: Dennis Breuker

Date: 23:56:38 01/13/03

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On January 13, 2003 at 14:13:08, K. Burcham wrote:

>I have the book and others also.

<snip>

>On what page did you say you read where this is a bug?

Page 223.

>On what page did Hsu state this was a bug?

Page 223.

>I cannot find this in any of my material, Dennis.

As I mentioned in my previous post:
Behind Deep Blue, page 223.

Here is a quote:
"
Then it suffered the same bug that caused Deep Blue Jr to toss
a pawn against Christiansen in its training match. Instead of playing
44..Rf5 and prolonging the game as it intended, it played the instantly
losing move 44..Rd1, and after Garry's reply, we immediately resigned.
That night, Joe worked late and finally fixed the bug that had haunted
us for over a month.
"

Notice the word "bug"? :-)

>Also, you ask why I ask Robert. I know he will give me his honest opinion.
>I feel he has technical reasons for his opinion. Right or wrong, Robert is very
>qualified to state an opinion on Deep Blue.

I agree. But I also think that Hsu shoud know more.
He (together with other people) built the thing!

>As far as Hsu goes, I am not sure how aware he was of his own machine.
>It would seem not too many games were played with the final version of Deep
>Blue. Like you said, Hsu was surprised to see 44...Rd1.

Where did I say that?

>an amazing machine,

It sure was!
Dennis



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