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Subject: Re: Crafty blitz rating under 2800?

Author: Jeremiah Penery

Date: 13:51:06 12/01/99

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On December 01, 1999 at 14:41:26, Robert Hyatt wrote:

>On December 01, 1999 at 14:26:34, Ricardo Gibert wrote:
>
>>The blitz rating for crafty has plummeted to under 2800 in a fairly short period
>>of time. Has the latest version acquired a bug or we witnessing a normal rating
>>oscillation at its low ebb? For awhile there crafty sported a 3250+ rating that
>>must have sent frightened GMs diving under their desks for cover. What happened?
>
>
>It is a bug.  I just found one serious thing, but I have simply not had time
>to do further analysis.  I am currently in a hospital bed (fortunately with a
>phone and my trusty notebook) recovering from surgery.  Once I get home later
>this week, I hope I can fix everything.

Oh, my!  Add my hopes that it was nothing serious, and that you make a speedy
recovery. :)

>The current bug dealt with having a "char passed_pawn_value[8]" array...  which
>I scaled up so that a passer on the 7th starts at a score of 132.  Unfortunately
>+132 (in a char) is a negative number which was not what I intended.  :)

What version was this bug introduced in?  I've been having problems with passed
pawns on the 7th rank lately with 17.2.  It always seems to allow them, and then
often doesn't try to capture them when it easily could.  Eventually, it chokes
on them and loses. :(



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