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Subject: Re: Fritz 9 And The Rules Of Chess (or some people just don't listen....

Author: Harald Lüßen

Date: 10:33:57 10/01/05

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On September 30, 2005 at 16:47:01, Chris Conkie wrote:
>For example.....should an engine calculate on a position when the position
>is already in check and it is the side to move? Should an engine consider
>taking a king? Should an engine take a king and then continue to play on
>as though nothing happened?
>
>We don't think so. You have to draw the line somewhere......
>
>We draw it here.
>
>[d] r4rk1/b7/8/8/8/8/B7/R3K2R w KQ - 0 1

What is the right reaction of an engine?
My own winboard engine acts a little bit strange here.
In its logfile I read this:

setboard r4rk1/b7/8/8/8/8/B7/R3K2R w KQ - 0 1
check_rules: Black is mate
error position.fen(...)
analyse

And then it continues to analyse the standard opening position
because that is the default when setboard leads to an error.
But the winboard GUI does not notice anything and shows the bad
position and the opening analysis. What happens when I send
an error message to winboard? Which and when?

Harald



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