Author: Stuart Cracraft
Date: 07:04:31 09/08/04
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On September 08, 2004 at 03:15:23, Uri Blass wrote: >On September 07, 2004 at 21:03:32, Michael Neish wrote: > >>On September 07, 2004 at 10:32:27, Stuart Cracraft wrote: >> >>>Sure -- because we didn't tune against this position. >>> >>>:-) >> >>Excuse my naivety, but what is there to tune? Gnuchess seems to extend by one >>ply when there's a check, and by another if there is only one legal reply. >>Shouldn't this alone take it far enough? >> >>Regards, >> >>Mike. > >I did not read the source code of gnuchess but no chess program does it >unless the programmer does not care about strength of the program. > >Extending checks and one reply by one ply everywhere is going to cause the >search to explode and I will not be surprised if the program cannot get deep >because of extending useless lines. > >Uri I extend check-evasions by one ply in quiescence and main search and I extend one-legal-reply positions one ply but the two are mutually exclusive in my program. I do not extend checking moves in the quiescence nor main search as it has been too expensive for me. I have had no problems with the serach blowing up.
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