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Subject: Re: WAC #199 and WAC #273

Author: Ernst A. Heinz

Date: 08:49:51 02/17/98

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On February 17, 1998 at 09:50:30, Ernst A. Heinz wrote:

>On February 17, 1998 at 09:13:53, Robert Hyatt wrote:
>
>>On February 17, 1998 at 08:46:12, Ernst A. Heinz wrote:
>
>>>WAC #273
>>>FEN 2k4B/bpp1qp2/p1b5/7p/1PN1n1p1/2Pr4/P5PP/R3QR1K b - - 0 1
>>>solution = Ng3+
>>>
>>>Up to iteration #12 DarkThought prefers the given solution with
>>>a score of +6.5 but then it switches to g3 with an even higher
>>>score. What do other programs say? Is g3 a new cook?
>>>
>>>*****
>>
>>I haven't run this to extreme depths to see if this works or not.
>>I did try it on Cray Blitz and Crafty:
>>crafty finds ng3+ instantly, by depth=7, 2 seconds the score is +5.7, by
>>depth=10, score=+7.25
>>
>>Cray Blitz gets +7.9 at ply=7, 0 seconds.  It didn't
>>change to g3 although I couldn't let it run more than a few seconds
>>(it gets the
>
>DarkThought finds Ng3+ instantly, too, but then switches to g3 in
>iteration #12.
>
>I let both positions above run for 1 hour each on a 500MHz Alpha and
>DarkThought sticks to its "cooks" with the listed scores while reaching
>depths of 14-15 plies.

DarkThought scores g3 as about +12 in iteration #14 after 75 minutes!

=Ernst=
>
>=Ernst=



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