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Subject: Re: perft position

Author: Uri Blass

Date: 19:17:33 10/01/04

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On October 01, 2004 at 18:33:00, Alessandro Scotti wrote:

>On October 01, 2004 at 13:43:17, Uri Blass wrote:
>
>>[D]5b1k/4p1p1/4P1P1/8/8/1p2p1p1/1P2P1P1/K4B2 w - - 0 1
>>
>>How much time does your program need to get perft 50 and perft 70
>>
>>latest Movei after fixing perft to be able to calculate more than 20 plies
>>gives
>>perft 50=531,441
>>perft 70=129,140,163
>
>On a 700 MHz Athlon:
>perft 50 -> 2.9 sec
>perft 60 -> 48 sec
>perft 70 -> n/a (don't want to wait too much!)

comparing with result of movei on A1000
perft 50 2.023 seconds
perft 60 32.587 seconds
perft 70 500.37 seconds

Note that this is only in case of having
#define MODE MODE_PERFT

changing the single line to
#define MODE MODE_GAME means that movei is almost twice slower because it
calculates a lot of irrelevant information like zobrist keys or evaluation.

Uri





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