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Subject: Re: Tiger too selective ?

Author: Robert Hyatt

Date: 11:20:55 12/22/00

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On December 22, 2000 at 13:53:21, Ernst A. Heinz wrote:

>Hi Uri,
>
>>On December 22, 2000 at 12:56:43, Ernst A. Heinz wrote:
>>
>>>>[d]2r1k2r/5pp1/4p3/ppqpP3/4bQPP/1B6/PPP2R1R/2K5 b k -
>>>>
>>>>a4 ! is very strong (1...a4 2.Qf7 Kd8 3. Qxg7 Qe3+ -+)  but Tiger (2 versions)
>>>>doesn't see this move
>>>>
>>>>How do perform other engines here ?
>>>
>>>"DarkThought" (http://supertech.lcs.mit.edu/~heinz/dt/) locks
>>>onto a4 with a positive score of +1.3 in iteration #10 after
>>>less than 20 sec.
>>>
>>>=Ernst=
>>
>>What is the score of Dark thought after 0-0 instead of a4?
>>Crafty17.13 is very happy with 0-0(1.45 pawns for black at iteration 14)
>>Crafty does not like a4 at iteration 14.
>
>"DarkThought" prefers 0-0 until iteration #10 where it gets
>a fail-low on it and scores it only as +0.39. White's attack
>on the King side with Pawns storming forward fast simply seems
>too dangerous for "DarkThought" to like it.
>
>Actually, "DarkThought" just got another fail-high on a4 in
>iteration #14 with an unresolved score >= +1.62. So, the score
>of a4 seems to increase the deeper "DarkThought" looks into  it.
>
>=Ernst=
>
>to like the castling move.


Did you look at what happens if you play a4?  Your kingside gets totally
shredded, starting with Qxf7+...



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