Author: chandler yergin
Date: 16:52:46 10/11/05
Go up one level in this thread
On October 11, 2005 at 19:43:59, Michael Yee wrote:
>On October 11, 2005 at 17:46:02, chandler yergin wrote:
>
>>I apologize if I have offended anyone.
>>A case of "Apples & Oranges" again..
>>Misunderstandings..
>>Stephen, and a few others here, know I seldom voice "Opinions";
>>I Post facts..
>>That way... if someone differs from the Post, they should attack the Fact,
>>not the Poster.
>>It doesn't always work that way...
>>Everything I have Posted about Computer Chess Programs..I gave the Link
>>Everything else I have Posted about Engines, Analysis Modules, is directly
>>from the Chessbase Manual. It therefore refers to the Top Commercial
>>Programs only.. Fritz, & Shredder
>>Many of you that Program your own Engines 'tweak' them as you desire,
>>and have a lot of fun.
>>Players mostly use the Top Commercial Programs to assist in their play
>>and improve their expertise.
>>Thanks to a recent Post by Dan H. some of the confusion has been cleared up.
>>Chessbase does use Mini/Max and so does indeed search every legal move
>>for every position.
>>So the "Apples & Oranges" now are just the difference between the Top
>>Commercial Programs and the others.
>>I find it very intersting that some of the 'lesser' Engines are really
>>kicking Butt! Congrats to all! Keep it up...
>>A Swift Kick only hurts for a little while..
>>;)
>>Chan
>
>
>The posts from Dan don't say that chessbase uses minimax and searches every
>legal move for every position.
I know he didn't say it.. I said it!
In fact, he said something almost the
>opposite--that if a program worked that way, it would be crushed.
Just plain wrong..sorry.
>
>You actually supplied evidence of the answer in one of your other posts (where
>you provide a description of the analysis output). The analysis window reported:
>
>search depth = 12 (selective depth 40)
>positions searched = 4.2 x 10^7
I was using an example.. the type of info the Analysis Module window shows.
>
>If the analysis module really searched every position up to depth 12
>(approximately 20 moves, 20 replies to each of those moves, 20 replies to each
>of those replies, etc.), then it would have searched
>
>20^12 = 4.1 x 10^15 positions
>
>This is way more than what was reported in the analysis window. (And the 20 is a
>very low estimate of average moves per position anyway.) Instead,
>
>4.32^12 = 4.22 x 10^7
>
>shows a branching factor that's more like 4--i.e., the program was not searching
>every move in every position.
>
>Michael
Michael, Please read the Chessbase Manual!
Do you have Chessbase? Do you have Fritz or Shredder?
If so Start the engine look at the Analysis Window as I have requested.
You will find what I said. EVERY Legal move in the position is evaluated.
It's the way it works. Like it or not.
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