Author: Uri Blass
Date: 15:07:26 11/22/01
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On November 22, 2001 at 16:26:50, Andrew Williams wrote: >On November 22, 2001 at 15:52:22, Uri Blass wrote: > >>The times of my program in calculating perft(number of legal games of fixed >>number of plies) are not bad. >> >>I get on p800 33 seconds for finding perft 6=119060324 in the initial position >>and also 33 seconds for finding perft 5=193690690 in another known position >> >>this is not a mistake and my program needs similiar time because it generates >>only legal moves so it needs less nodes to calculate perft 5. >> > >Well I'm happy to confirm your node counts, Uri, but PostModernist can't >match your speed! For the starting position, it takes PM 166 seconds on an >Athlon 1200 to complete six plies. For the position below, it takes 335 >seconds to complete 5 plies. > >Andrew These numbers are correct but I am sure that I am going to find numbers that are not correct if I let it search deeper because there are known bugs and maybe unknown bugs in my move generator. I knew that the numbers are correct and I used Crafty or Yace to discover my mistakes when the numbers were not correct(I started by discovering smaller numbers that were not correct). My move generator is very complicated so I am not going to be surprised if there are more bugs that I do not know about and I may use perft 7 of the initial position and perft 6 of the the position that was posted to continue to test it even after correcting the known bugs. Uri
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