Author: José de Jesús García Ruvalcaba
Date: 16:45:07 08/27/99
Go up one level in this thread
On August 27, 1999 at 11:09:59, Robert Hyatt wrote: >On August 27, 1999 at 01:54:24, blass uri wrote: > >> >>On August 27, 1999 at 00:06:25, Robert Hyatt wrote: >> >>>On August 26, 1999 at 20:21:04, Mark Rawlings wrote: >>> >>>>I _finally_ got all of the 5-piece tablebases to use with Crafty and Winboard! >>>>These things are great for analyzing endgames. Still waiting for the 6-piece >>>>files to be posted :) >>>> >>>>Anyway, what is a "successful" tablebase probe? I thought when you have the >>>>whole set, all probes were successful? Thanks, >>>> >>>>Mark >>> >>> >>>Note that you don't have the "whole set" because we didn't build the 4 vs 1 >>>piece files. You can, but they take up a whole lot more space, and I don't >>>think crafty needs those to win the positions.. :) >> >>There are some 3 vs 2 tablebases that crafty does not need to win the position. >> >>For example KQRvs KP,KQR vs KN >> >>Uri > > >There are many that it doesn't need... (KQ vs KR is another) however without all >of them, the search definitely gets confused. And it is much better to _know_ >when you are exchanging into a won ending, rather than into an ending you think >you can win but can't... > >We will have to do the 4 vs 1 files before we get to the 3 vs 3 files, which >are not too far into the future now. So one day we will have all the 5's and >a bunch of the 6's... You do not need the 4 vs 1 tablebases to get the 3 vs 3, as a 3 vs 3 endgame can not lead to a 4 vs 1. The 4 vs 1 will be required to produce the 4 vs 2 and the 5 vs 1 tablebases.
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