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Subject: Re: Why is this position so difficult to evaluate?

Author: Ernst A. Heinz

Date: 09:30:10 01/11/00

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Hi Ed,

>Case 2:
>
>[d]2rq2k1/4bppp/p1rp4/1p1NpP2/4P3/2PQ4/PP4PP/3R1R1K w - -
>
>Robert Fischer's famous:  Ra1!!
>
>I assume almost every program will play f6? here leaving white with
>nothing. I wonder if any program will find this fine positional move.

"DarkThought WCCC'99" never chooses f6 as the best move. Instead, it
wavers between Ra1 and a4 (might lead to a transposition) before
finally locking onto Ra1 with a positive score of +1.27 in iteration
12 after 1:30 min.

Cheers,

=Ernst=

P.S.
"Scalable Search in Computer Chess" now at Amazon.de and MKP online:
http://www.amazon.de/exec/obidos/ASIN/3528057327/
http://www.mkp.com/books_catalog/3-52805-732-7.asp  :-)

Visit http://supertech.lcs.mit.edu/~heinz/node1.html for more
information about the book.



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