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Subject: Re: PV Maximums (plies and characters) in CM8000

Author: James T. Walker

Date: 13:37:28 11/28/00

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On November 28, 2000 at 16:28:26, John Merlino wrote:

>On November 28, 2000 at 16:21:33, James T. Walker wrote:
>
>>On November 27, 2000 at 18:35:09, John Merlino wrote:
>>
>>>I cannot remember who asked this, nor on what thread the question was asked, so
>>>I'm just posting this here on the hopes that the person who asked me will find
>>>it.
>>>
>>>The question was: What are the maximums, both in plies and in characters, that
>>>The King/CM8000 supports?
>>>
>>>Answer: The King has an internal maximum PV length of 63 plies, and the GUI
>>>supports PV strings that are up to 2048 characters long.
>>>
>>>jm
>>
>>Hello John,
>>I think the question was how many plies will CM8K search.  I gave it the
>>following position from the endgame tutorials.
>>
>>8/p7/P7/8/8/6K1/8/6k1 b - - 0 1
>>
>>Chessmaster 8000 searched 46 plies in about 2 seconds and stopped (Infinite
>>level).  The clock continued to run but CM8K was not searching anymore.  This
>>looks like a bug to me.
>>Jim
>
>Well, that's exactly what happens to me too, but I'm not SURE it's a bug.
>Obviously, infinite time means that the engine will never return a move (it's
>basically the same as analyze mode). However, the engine stopping might be
>something intentional in Johan's code. I'll ask him and get back to you as soon
>as he gets back to me....
>
>jm

Thanks John,
Well you can select 99 plies in the personality setup so I expect that it should
go that far in infinite level.   That's why I suspect it's a bug.  Also if it's
not going to compute anymore then it should kick out a move and stop it's clock
even in the infinite mode.
Jim



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