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Subject: Re: Bitboards and Quick Killer

Author: Larry Griffiths

Date: 17:38:58 08/15/00

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On August 15, 2000 at 19:56:37, Brian Richardson wrote:
>
>
>Rather than "generating" moves for the killers, try a quick is it still legal
>routine.
>
>Regarding Tom's post:  I cannot speak for a lot of programs, but at least for
>Tinker and Crafty, doing killers before captures seems to work better.
>
>Brian

Seems like I tried to do something like that in my last program.  The from
pieces would have to match, non-sliding moves would have to be empty squares or
opposite colored pieces, and sliding pieces would have to see if their path is
blocked by the previous plys move.

I think I like killers (which kind of works like a principle continuation for
me) because I do iterative deepening and the killers near the root plys keep the
branching factor lower as the plys increase. I mainly like iterative deepening
because I can stop the search when time gets low...

Larry.



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