Author: James T. Walker
Date: 20:22:21 11/28/00
Go up one level in this thread
On November 28, 2000 at 22:04:29, John Merlino wrote: >On November 28, 2000 at 16:37:28, James T. Walker wrote: > >>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 > >I got a response from Johan. I was incorrect about the max PV length for The >King. It has a maximum of (gee whiz) 46 plies, and 200 characters. The GUI, as >mentioned above, can support up to 2048 characters of PV text from other >engines, however. > >I imagine that the reason that 99 plies was set as a maximum was just for the >future, and possibly even because they didn't know what The King's maximum PV >length was when that code was written! > >Sorry about the confusion. > >jm Thanks again John, It's great to get some info rather than sit around wondering. Tell Johan that 46 plies is not enough with todays fast computers. If it takes only 2 seconds then the number of plies should be increased to say 99? :-) I still think that if it is finished searching then it should kick out an answer even if it is on the "Infinite" level. Jim
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