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Subject: Re: Perft 7 for Gothic Chess

Author: Michel Langeveld

Date: 09:13:41 01/27/04

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On January 26, 2004 at 23:50:38, Ed Trice wrote:

>877,551,731

Oops ... I think this number is an answer that is 17 times overflowed
and calculated with a program that uses 32bits.

perft 1= 28
perft 2= 784 (is 28 x perft 1)
perft 3= 25283 (is 32 x perft 2)
perft 4= 809826 (is 32 x perft 3)
perft 5= 28976137 (is 36 x perft 4)
perft 6= 1027599562 (is 35 x perft 5)

So if you put a gun at me and I have to guess an answer then I would say: perft
7 should be around:
1027599562 x 35 = 35.965.984.670.

This is clearly bigger as what can be held within 32bits.
I think we until perft 13-14 64bits can be used savely :-)



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