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Subject: Re: Congratulations to IsiChess

Author: José Carlos

Date: 11:42:11 11/14/02

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On November 14, 2002 at 13:33:26, Russell Reagan wrote:

>On November 14, 2002 at 11:04:42, José Carlos wrote:
>
>
>>  It's a completely new engine written from scratch, just for the fun of
>>experiencing new things. It uses non-rotated bitboards and MTD(f). Actually, my
>>personal versions of both :)
>
>How do you handle things like rook file attacks with your non-rotated bitboards?
>In other words, what do you do instead of using rotated bitboards? Do you use
>the Kogge-Stone algorithms?
>
>Russell

  No. I compute a "between" bitboard and then check whether there's a piece
between or not for every possible rook attack. It's not very smart, but avoids
complexity and, when I want to learn about something I always go for the easy
way first, trying to figure out everything myself. Later, I'll try more
sophisticated methods, but only when I'm totally sure what's going on.

  José C.



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