Author: Michel Langeveld
Date: 15:25:06 07/23/00
Go up one level in this thread
On July 23, 2000 at 17:34:07, Vincent Lejeune wrote: >On July 23, 2000 at 17:06:44, Larry Griffiths wrote: > >>On July 23, 2000 at 16:19:55, Larry Griffiths wrote: >> >>>Hi Robert, >>> >>>Vincent Lejeune posted a message on June 01, 2000 at 5:42:33 >>>that said to download Crafty and use the 'perft' command to get the >>>possible moves at 'n' plies. >>> >>>The message contained... >>> >>>White(1): perft 1 >>>total moves=20 >>>White(1): perft 2 >>>total moves=400 >>>White(1): perft 3 >>>total moves=8902 >>>White(1): perft 4 >>>total moves=197281 >>>White(1): perft 5 >>>total moves=4865609 >>> >>>I assumed that this produced all the legal moves at each ply level and was using >>>it to validate counts in my program. I matched the 197281 until I added >>>en-passant and now I get 197303 at ply 4. >>> >>>Does your perft command do enpassant, castleing etc? >>> >>>Larry. >> >>Ok, let me try again :) >> >>My new results are: >> >>TCBoard - BruteForce Elapsed Time= 3.53 seconds >> >>TCBoard - BruteForce Ply ----CAPTURES--- -----MOVES----- -----TOTAL----- >>TCBoard - BruteForce 1 0 20 20 >>TCBoard - BruteForce 2 0 400 400 >>TCBoard - BruteForce 3 34 8,868 8,902 >>TCBoard - BruteForce 4 1,576 195,705 197,281 >>TCBoard - BruteForce 5 82,719 4,782,888 4,865,607 >>TCBoard - BruteForce _______________ _______________ _______________ >>TCBoard - BruteForce 84,329 4,987,881 5,072,210 >> >>TCBoard - BruteForce Captures/Moves Per Second= 1,436,480 >> >>It is obvious that en-passant is indeed in your output but my 4,865,607 >>does not match your 4,865,609. I am wondering if Vincent copied and pasted or >>just typed the numbers in since we differ by 2 moves. >> >>Will Crafty run under Windows 98 or Windows 2000, and if so... >>where can I download it from? >> >>Larry. > >Yes I've copy-past the text from Crafty >But you can verify , download the latest version here : >ftp://ftp.cis.uab.edu/pub/hyatt/ ;) I think the trick has something to do with CheckMate. Crafty doesn't count checkmate if I remember correctly...
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