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Subject: Re: Question to Jeroen: What went wrong with Tiger?

Author: Uri Blass

Date: 04:33:41 08/25/01

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On August 25, 2001 at 02:05:19, Mig Greengard wrote:

>On August 25, 2001 at 00:55:56, Christophe Theron wrote:
>
>>But as you tell me there is something to learn, I believe you and I think this
>>game deserves a longer analysis.
>
>You can't learn anything from 100 games unless you study each one. That's
>Botvinnik, and it shows how hard it is for a human or program to improve. Many
>games might not mean anything, but you have to look at all of them to find the
>one that holds a golden nugget.
>
>DJ-Tiger was not interesting because of how easily Junior won, although that
>draws attention, but when such a strong program plays into such a bad position
>there must be something wrong somewhere. (Junior's b4 against Shredder was such
>a move and will be giving Amir and Shay headaches. 17...f5 is yours.)
>
>17...f5?? (17...h5!) could reflect various misconceptions by Tiger. (below) As
>always in computer chess, anything can be blamed on horizon, but that is wrong,
>as you said. Obviously, if it had seen ahead another 10 moves it wouldn't have
>played it...
>
>1) B versus N. Assuming white would play 18.fxe4??, "winning" bishop for knight.

My gambitTiger expects Nh6 and I also read that tiger expected the right move
Nh6 in the game.

>2) King safety. Not valuing enough the fact that with the knight on h6 the black
>king would be doomed in the long run. A human Master plays 18.Nh6 instinctively.

I am not sure about it.
The knight at h6 cannot move to another square without losing material so if
black can survive the attack the knight may be trapped.

I prefer Nh6 but I expect strong humans to think about it.

Uri



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