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Subject: Re: Does this position blow up your program?

Author: Uri Blass

Date: 04:21:03 12/25/02

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On December 25, 2002 at 07:05:43, Richard Bean wrote:

>movei:
>
>>>perft 5 13,853,661(0.922 seconds)
>>>perft 6 115,892,741(38.505 seconds)
>>>perft 7 17,650,572,059(time 1182.761 seconds on 1000 mhz)
>
>Crafty and my program output 470,702,875 and 17,650,572,059 - 470,702,875 =
>2^34. I must forgotten a "long long" somewhere in the version I still have.
>
>Also chest gets the above perft result.
>
>Can someone verify my perft 10 result from the initial position -
>69,353,847,899,771, or verify the number of unique nodes at plies 4 to 8?

movei on 1000 mhz
perft 4 197281 time 0.02 seconds
perft 5 4865609 time 0.601 seconds
perft 6 119060324 time 15.222 seconds
perft 7 3,195,901,860 time 385.494 seconds

You can see that for perft 8 I may need more than 2 hours
I need some days for perft 9 and I need some months for perft 10 and many years
for perft 11.

Uri



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