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Subject: Re: Value of King in SEE

Author: Robert Hyatt

Date: 11:56:31 01/07/02

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On January 07, 2002 at 13:31:47, David Rasmussen wrote:

>On January 07, 2002 at 13:20:20, Rafael Andrist wrote:
>
>>On January 07, 2002 at 10:03:41, David Rasmussen wrote:
>>
>>>In SEE, the king should of course be the last to capture, as no piece can
>>>capture the king. But the king should also have some large value to indicate a
>>>winning capture for the opposing side. In a position such as this:
>>>
>>>[D]2rqkb1r/p1pnpppp/3p3n/3B4/2BPP3/1QP5/PP3PPP/RN2K1NR w KQk - 0 1
>>
>>I would stop the capture sequence before involving the king in this case. If you
>>only have a king to (re-)capture and there are still other pieces "pointing" to
>>the to-square, stop the capture sequence.
>>
>>regards
>>Rafael B. Andrist
>
>Yeah, that's what I have suggested too, after writing my first post.
>
>/David


That works but it wastes time.  IE you are making that check all the time
when it is rarely important.  Assuming you minimax the scores after you make
the last capture, if a king is "hung" the captures will not go beyond that
point _anyway_ since the side on move loses too much material (by losing the
king) to make the capture worthwhile.

Doing it as I suggested produces the right answer every time, without any
special test inserted in a loop that is executed a _bunch_ of times in a
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