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Subject: Re: Is this solvable by brute force?

Author: Sune Fischer

Date: 09:11:16 09/18/03

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On September 18, 2003 at 11:02:38, Tony Werten wrote:

>>So, assuming a branching factor of 4, and game length of 50 plies, there are
>>about 4 ^ 50 = 1267650600228229401496703205376 positions to search. Assuming you
>>can search 100 million positions per second, it will take you about
>>401969368413314 _years_ to finish the computation!
>
>Your off by a factor of a couple of billion since there are only
>29019905518636890 possible different positions.

I suspect the number of possible game paths is far greater then the number of
possible positions, since by definition a position is only possible if there is
a path leading to it.

-S.

>At most a little less than 10 years of computation. (Pure minimax that is)
>
>Tony
>
>>
>>However, there will be a huge hash table hit rate (about 99% I guess), and you
>>can also benefit from many symmetrical positions (which arise by mirroring
>>another position). So, I think this position is solvable by brute force. Good
>>luck!



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