Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Which Crafty is Best ??

Author: James T. Walker

Date: 08:31:54 12/13/98

Go up one level in this thread


On December 13, 1998 at 10:14:08, Robert Hyatt wrote:

>On December 13, 1998 at 07:41:36, James T. Walker wrote:
>
>>On December 13, 1998 at 00:25:09, Robert Hyatt wrote:
>>
>>>On December 12, 1998 at 14:33:41, James T. Walker wrote:
>>>
>>>>Subject says it all..   I continue to get better results with 15.20 than 16.0.
>>>>Is anyone else testing with these two engines?  What are the improvements with
>>>>Crafty 16.x ??
>>>>Jim Walker
>>>
>>>There's no real differences between the two except for tablebase support
>>>changes...
>>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>Hello Bob,
>>Thanks for answering my post here.  I've asked this question before and you gave
>>me the same answer.  The problem is that when I test the two programs I have
>>which were downloaded from your site (Wcrafty.exe) I get different results.
>>Here is a position from an earlier post by L.Chen:
>>
>>1rb2rk1/1q2bppp/4pn2/pN1pP3/B7/4BP2/1PP2QPP/2KR3R b - - 0 19
>>
>>This was created by Crafty.  Anyway, Crafty15.20 finds 19....Bd7 in about 3
>>minutes.  Crafty 16.0 finds Bd7 in almost 10 minutes a ply later.  There are
>>other examples but if they were the same why wouldn't they take the same amount
>>of time for the same position.  There are no tabelbase probes involved in the
>>search.
>>I want to play some games with CraftyXX.XX but would like to make sure I have
>>the strongest version vs some commercial programs.
>>Thanks for your answer,
>>Jim Walker
>
>there are some differences but they are *very* minor.  IE I played a bunch of
>1 minute games and they come out pretty even, with a slight bias for 16.0/1...
>(don't use 16.0 with tablebases, there is a subtle bug in the probe code that
>will screw up if an enpassant capture is possible)...
>
>But as always, use the one you want, or the one you think is best...
>>>>>>>>>>>>>>>>
Thanks again Bob, but I was trying to get you to commit as to which is the best.
 I wanted it from the source !  :-)
Where do you think Crafty's strengths lie ?  I mean is it best at 5,0 or 30,0 or
maybe 40/120 vs most other programs ?
Jim Walker



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.