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Subject: Re: Number of legal positions for KQk (hello Dieter)

Author: Dieter Buerssner

Date: 16:27:20 03/10/02

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On March 10, 2002 at 18:53:59, Guido wrote:

>I follow the same logic, but the value you obtain 462*62=28644 doesn't take into
>account that positions of the Queen/Rook are not 62 when the two Kings are on
>the diagonal a1h8. There are 21 of such positions for the Kings, and in these
>cases the Queen/Rook has only 34 square. Therefore:
>
>28644 - 21*(62-34) = 28056
>
>Using the same reduction it is possible that you obtain the same number as me
>also for wtm.

Thanks for pointing this out. I agree with your reasoning, and stand corrected.
For my usuage, I believe this additional symmetry is not worthwhile, so I did
not code it (and actually, I did not even think of it ...)

Ciao,
Dieter




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