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Subject: Re: crafty 16.3 - something broken in K and P endgames?

Author: Djordje Vidanovic

Date: 10:21:39 01/31/99

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On January 31, 1999 at 10:43:10, Robert Hyatt wrote:

>On January 30, 1999 at 23:54:15, James B. Shearer wrote:
>
>>       I was playing Fitter on ICC and was surprised when it let me escape with
>>a draw in a K and P endgame.  I checked the key position afterwards with crafty
>>16.3 (on a 233 k6 PC).  Crafty 16.3 takes 2 hours to find the winning move, h4,
>>at ply 16 (see log below).  On the other hand crafty 15.15 finds h4 in 8 seconds
>>at ply 10.  Fritz 4 also finds h4 in a few seconds.  Looks like you may have
>>broken something.
>>                                James B. Shearer
>
>
>you must have something broken on your machine, first.  I ran this on my
>PII/300 notebook, and get to ply 16 in a minute, not hours.  Is your machine
>swapping/paging a lot?  It takes me to depth=16 to fail high on h4, takes 2:00
>on my notebook, and 25 seconds on my quad xeon...  I couldn't begin to explain
>why it would take hours to get to ply=16 there...  I am at ply=17 failing high
>again after only 3 minutes on my notebook.
>
>No idea why it takes 16 plies however... but I'll look...
>

Crafty 15_18 reaches ply 14 on my PII-350 (12MB Hash, 10 Phash -- set up for
blitz) and finds 1...h4 in 36 seconds.  Haven't tried the later versions... All
this with my Internet connection on.

Regards,
Djordje



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