Author: chandler yergin
Date: 16:54:25 01/16/05
Go up one level in this thread
On January 16, 2005 at 18:55:30, Anthony Cozzie wrote: >On January 16, 2005 at 17:18:36, chandler yergin wrote: > >>On January 16, 2005 at 12:16:53, Anthony Cozzie wrote: >> >>>Please find the error in one or more of these statements Chandler: >>> >>>1. A tablebase access takes at least 2-3 ms, even on a 15K SCSI hard drve. >>> >>>2. Most engines (except for Diep ;) have evaluations that take a few >>>microseconds or so. >>> >>>3. Therefore a tablebase access is on the order of 1000X slower than calling the >>>evaluation function. >>> >>>4. Since most of the time is spent in the evaluation function, this means if the >>>programmer called tablebase_probe() at every node it would run 1000X slower, >>>that is 1K nps instead of 1M nps in Zappa's case. >> >> >>Quoting from a previous Post: >> >>How long does it take for your engine to find kf3 ? >>[D]8/7R/1N2k1p1/P1p1b3/P3r3/7P/4K3/8 w - - 0 47 >> >>Yace almost immediately, loses it after some seconds. Finds it again after 3 >>hours (when I lost patience). Is Kf3 the only winning move? >> >>Regards, >>Dieter >> >> So...? We have you stateing time, and another Programmer stateing >>almost immediately... >> >>Why wait 3 hours? Hmmmm? >> >>Is there ANY possible justification for this? >>He also had to ask.. is Kf3 the only winning move? >> >>Is there any possible justification for him NOT knowing? >> >>The King only has 6 possible moves! >>Examine tham all at the same time... >> >>Then, after a few seconds. or a minute..recognize the Computer has decided >>on which is the best move, focus on that pV, and let it run... >>Decrease the Lines to one, and the Scroll information as to time, and Nodes is >>NOT Lost... you can still Clip the Ananysis and Paste.. >> >>> >>>Note that we are talking about positions with (say) 8 pieces on the board; for >>>example this KRPPPvKRP position. White wants to keep his passers together and >>>win, Black hopes to split them and (possibly) draw. >>> >>>[D]8/8/r6k/6p1/6P1/5P1P/R6K/8 w - - 0 1 >>> >>>When a lot of people (experts especially) think something, it is usually good to >>>at least consider their position. They might be wrong anyway, but they probably >>>have at least some justification for their opinion. I get the feeling that you >>>never read anything I write, but I keep trying for the sake of world (or at >>>least forum) peace anyway :) >>> >>>anthony >> >> I do read what you write anthony, I wonder if you do the same for me. >>Now please refute what I wrote, or try, and I'll listen carefully. >>Thanks, Chan > >Chandler, its difficult for me to believe you read my post. I talked about >tablebase probes, you talked about your continuing fixation on multiple PVs and >how we are all morons for not using them. > >anthony If you and others enjoy engine vs engine Matches, and playing on Playchess or ICC or whatever Site, I can understand that. From a Player's point of view.. Understanding Chess and Positions is crucial, and many many players have devoted their Lives to that! The Chess Analysis Modules are a wonderful Tool, for us to use. To use those tools and our time to the maximum allowed by the existing Technology is logical. I have seen Posts here where Players do indeed use Chessbase and Multiple Lines for Analysis. They have learned through the use of the Opening Tree which also includes "unplayed Transpositions" to find better Lines to play, and include in their Opening Repertoire. Let's not confuse the issue.. There are Appples & Oranges. Now.. All this mainly started when I Posted that "Chess will never be solved by Computers"! If you followed the Threads, I got some very ignorant feedback. I responded... Then some more.. misinformation and assertions not backed up by any evidence, and I 'responded' again. I see NO Point to continue this.. PLease confirm that you understand my position, and confirm if I understand yours. Then ... It IS Finished! P.S. You might also admit.. Chess will never be solved ;) Chan
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