Author: William Penn
Date: 20:46:54 02/14/05
Go up one level in this thread
On February 14, 2005 at 10:22:46, Mark R. Anderson wrote: >On February 13, 2005 at 16:38:22, Joseph Merolle wrote: > >>Two things just to make any sense with the new S9 UCI. >> >>In the opening book you have the “prob” which sets every move to 0% except e4 , >>therefore when s9 has white its will always chose e4. When I put a post up >>before you guys got prob mixed up with % however the prob % always overrides >>the %. There for moves like g4 , c4 , d4 will never be chose unless manually >>done. This is horrible for someone in training. >> >> >>Second , the online TB base shows the right moves to mate or draw however these >>moves do not influence the engine that is thinking so what good is it. If you >>don’t believe me just take your TB path to hard drive off then use the online >>data base. You will see moves come up however the engine never takes these moves >>however finds the mate or draw based on its engine power. >> >> >>Any thoughts would be great. > >Joseph, > >I bought the Shredder 9 UCI from Stefan and loaded the engine into my Chessbase >interface (where it kicks all the other engine's a**). I see neither of those >problems with my engine. It likes to play e4 the majority of time with White, >but it *will* play other moves ... I have seen it do so. Additionally, I set up > a bare board position and then put Black King on e8, White King on e1, White >Bishop on f1, and White Knight on g1. Shredder 9 announces mate in 28 >*instantly*. So, it is using tablebases. It may be true that it is not using >the online databases properly (I haven't checked this and don't really care, >personally), but if you define the tablebase path on your hard drive when you >are setting up Shredder 9 UCI, then it will use them when playing. Hope this >has been helpful. > >Mark Anderson > >> >>Regards Jospeh Suppose you have a 6-man endgame and you need to know the truth about it. Do you have any chance to win, lose, or draw it? That is the question. In the past you had two choices: (1) download or acquire the 6-man tablebases then use an engine/software that understands them. (2) or, go looking for some special work in this area by Ken Thompson, and hope that your position is one of those he solved. His endgame databases used to exist online, but their proper description was lost in a server accident. I suspect they might still be accessed online if you know the method, but I haven't tried. Now you have an easier alternative. Just put the position on the chessboard, go online (if you aren't already), click the button, and and let Shredder 1.2 Classic GUI/Shredder 9 UCI tell you the truth. Isn't that an improvement? There is no way with current technology that the endgame tablebases could be accessed online in the same fashion your local hard drive can access them, if you have installed them locally. Even the fastest broadband connection would probably be too slow. The amount of data transfer involved is enormous. However it is easy enough to query the database occasionally if you have a particular position in mind. WP
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