Author: Albert Silver
Date: 08:52:45 01/30/02
Go up one level in this thread
On January 29, 2002 at 23:53:06, Robert Hyatt wrote:
>On January 29, 2002 at 06:40:12, Albert Silver wrote:
>
>>On January 29, 2002 at 04:31:39, Jeroen van Dorp wrote:
>>
>>>Convecta claims to ave them (complete) on 9 CD's. Are there still some missing
>>>or so?
>>>
>>>
>>>http://store.convekta.com/shop_model.asp?gid=121&sView=Catalog
>>>
>>>J.
>>
>>A few piece combinations were indeed removed as they took up space for no good
>>reason. The combinations in question are King + 3 queens against King, King + 2
>>queens + rook against King, etc. They represent no practical value to either the
>>user or the engine and removing them saves from 1-2 Gb of HD space.
>>
>
>
>They do have _some_ merit. If the engine probes after a capture takes it to
>5 or less pieces, then you want to get a hit. If you omit some tables, some
>of the probes will fail, wasting time. And causing extra search.
I don't understand. If the search at that point doesn't get a tablebase hit with
a KQQQ vs. K and instead gets a score of +30 pawns, it will somehow contrive to
play worse?? Or make a poorer choice? Say opt for an alternate line that gives
it +35 pawns instead of the direct mate?
Albert
> Yes a
>program should win KQQQK or KRRRK or KBBBK or KNNNK, but it helps to know
>_exactly_ how deep the mate is, to make the search as efficient as possible.
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