Author: leonid
Date: 19:31:52 07/05/99
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On July 04, 1999 at 11:07:44, blass uri wrote: > >On July 04, 1999 at 10:15:03, walter irvin wrote: > ><snipped> >>i only thought it strange because , all 20 of my other programs are much faster >>by a factor of 3 to 12 , depending on program . even at that slow speed it is >>very powerfull at speed chess .im just amazed that the programmer was able to >>squeeze that much power out of so little . > >The number of nodes per second is not the important thing. >It is important to know which lines to search. >If complicated rules tell you which lines to search then you may be slower in >node per second but faster in seeing tactics. > >Another important thing is the evaluation function. >Programmers could search more nodes per second if the evaluation function was >only counting material but the result in this case is a very weak program. > >Uri I was all the time curious to know how the number of the positions per second is counted by the game. The reason for this rely on the counting the number of nodes seen on the lowest ply (ply zero). There (at least in my game, and I think the same is done in the game of everybody else) we don't go through the revision of the of all the nodes by deposition each move from the ply on the chess board off the screen), but value on the ply zero we find dofferently. This difference can probably explain why ChessMaster have so few positions per seconds and have so good game. He just count them differently. Leonid.
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