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Subject: Re: Does someone has perft 8 info of Crafty??

Author: Michel Langeveld

Date: 08:43:54 06/15/99

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On June 15, 1999 at 04:30:58, Andreas Stabel wrote:

>I have made the following table. The first 7 plys are checked against
>crafty. Ply 8 needed 47 hours on a 500MHz Pentium III. I have started to
>calculate ply 9, but it will take approximately three months, so I don't
>know if I will be able to finish it. Luckily my program is restartable.
>
>Ply| Number of nodes | Total # nodes | # Nodes / Prev. # Nodes
>---+-----------------+---------------+------------------------
>0  |             1   |           1   |         term=         0, ill=0
>1  |            20   |          21   |  20.000 term=         0, ill=0
>2  |           400   |         421   |  20.000 term=         0, ill=0
>3  |          8902   |        9323   |  22.255 term=         0, ill=0
>4  |        197281   |      206604   |  22.161 term=         0, ill=461
>5  |       4865609   |     5072213   |  24.663 term=         8, ill=15375
>6  |     119060324   |   124132537   |  24.470 term=       355, ill=916789
>7  |    3195901860   |  3320034397   |  26.843 term=     11183, ill=27695459
>8  |   84998978956   | 88319013353   |  26.596 term=    446950, ill=1165178140
>
>term = The number of endnodes occuring before the calulated ply caused by a
>mate or stalemate. ill is the number of illegal moves the program had to
>undo because the king would be in check.
>
>Note that some report these numbers with term added to the number of nodes.
>
>Regards
>Andreas Stabel

Thank you very much for the results. We seem to have the same results.
I shall also calculate a full 9 ply. 9 ply is interesting because it's the first
time 0-0-0(white) can happen and promotions(white) are valid.

I shall try also to get results of ply 10. But I don't know if this is doable in
a reasonable time.

Kind regards,

Michel Langeveld (rudolf@stad.dsl.nl)



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