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Subject: Re: ::sigh:: wac 17 problem

Author: Rick Bischoff

Date: 13:13:18 10/16/04

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On October 16, 2004 at 13:34:23, Michael Henderson wrote:

>Hmmm...your numbers do seem pretty large.  I can do 9 plies in < few hundred K
>nodes.  Hopefully no bugs in extensions/depth parameters?  It seems like there
>are some unwanted extra-depth searches.
>
>Michael

In this output, I turned off every extension (including check) and disabled
iterative deepening:
 5      55      16      18853 1. Ne5 Rf6 2. Bg5 Qxb3 3. axb3
 6     157      99     130437 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7
 7     157     328     363396 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7
 8     153    1284    1882658 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Nd5
 9     153    6368    6609003 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Rb6
5. c4
 9     154   14384   17170667 1. b6 axb6 2. Ne5 Kc8 3. Nxg6 hxg6 4. f3 Nd5 5.
Bg5
10     138   40361   55631916 1. b6 axb6 2. Ne5 Kc8 3. Nxg6 hxg6 4. Qxe6 Bxe6 5.
f3 Bd5

So you can see something else is happening.. In this output, I disabled qsearch
and just a static eval:

 5     311      56      11935 1. Ne5 Kc8 2. Nxg6 Qxg6 3. Rxe4
 6     -38     109      25782 1. Ne5 e3 2. Qxe6 exf2+ 3. Kxf2 Rxe6
 7     288     329     128748 1. Ne5 Qxb3 2. axb3 Bxb5 3. Nxg6 Nxg6 4. Rxa7
 8      36    2117     510910 1. Ne5 Qxb3 2. axb3 Bxb5 3. Nxg6 hxg6 4. h3 Rxh3
 9     284    5035    2409281 1. Ne5 Qxb3 2. axb3 Bxb5 3. Nxg6 Nxg6 4. c4 Bc6 5.
Rxa7
 9     287   12681    4452561 1. b6 axb6 2. Ne5 Rd8 3. Ba3 Nc6 4. Nxg6 Qxg6

I stopped it here, since there wasn't the dramatic improvement.  Could my poor
evaluation function account for this type of explosion?



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