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Subject: Re: WAC 141 blowup

Author: Chris Welty

Date: 00:30:42 09/01/04

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On September 01, 2004 at 00:51:47, Stuart Cracraft wrote:

>I know this is a long shot throwing this out there without much more
>info, but perhaps I'll get lucky and someone has seen this before.
>It's appeared on this bulletin board about 6 years ago.
>
>[D]4r1k1/p1qr1p2/2pb1Bp1/1p5p/3P1n1R/1B3P2/PP3PK1/2Q4R w - - bm Qxf4; id
>"WAC.141";
>
>without mate threat code

>10/46  g2f1 471.92 -825 92873175 g2f1 e8b8 h1g1 f4e6 h4h5
>11/46> g2f1 666.85 -575 133140320 g2f1 e8b8 h1g1 f4e6 h4h5

Perhaps the problem's not in the mate threat extension but somewhere else? When
Altamax sees Qxf4 the PV is only 10 ply long:
6 347 0 196349 Qxf4 Bxf4 Rxh5 gxh5 Rxh5 Bh6 Rxh6 Qg3+ Kxg3 Kf8  196kn /2.80s =
70.2kn/s

>P.S. The program is solving 241/300 on WAC on the same slow 1ghz p3 and at
>the same 1 second per position setting that Crafty 19.16 gets 270/300 on --
>fun since only was 175/300 a couple months ago and the program is less than 5
>months old. Also recently up from expert score on IQ4 to master. Did not code
>specifically for any given position other than one in WAC (141 is the second.)
>I did not look at the positions beyond the first couple and avoided looking at
>the printout except the summary/stats. Position printout was disabled, etc.,
>etc.

241/300 sounds pretty good!



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