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Subject: Re: Error in LCT II testsuite

Author: Will Singleton

Date: 07:39:15 08/30/02

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On August 30, 2002 at 07:54:24, Leen Ammeraal wrote:

>After spending a whole morning looking for an
>error in my program in connection with the
>position CMB6 in the LCT II testsuite, I
>finally found the problem. However, it was
>not in my program but in the line for that
>position:
>
>2r1k2r/2pn1pp1/1p3n1p/p3PP2/4q2B/P1P5/2Q1N1PP/R4RK1 w q - bm exf6; id
>"LCTII.CMB.06"; c0 "Lilienthal - Capablanca, Hastings 1934";
>
>As the beginning of this line shows, there is a
>black rook on c8. In spite of this, the q in
>
>w q - bm
>
>indicates that black still has the queen side
>castling right! In view of this, this q should
>be replaced with a hyphen (-) or a k.
>
>If you ever use this LCT II testsuite, you should
>correct this line.
>
>
>Leen

Thanks for pointing this out.  I checked my files, and some copies had the k,
some had q.

But I'm wondering why it would make any difference to your program.  First,
Queen should realize that the rook is out of position and cancel the castling
rights, or if the rook moved back to a8 that would cancel also.  But more
importantly, it appears to me that castling doesn't come into play in the
solution.

Maybe you still have a bug?

Will




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