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Subject: Re: CM9000 WB protocol question

Author: John Merlino

Date: 13:23:52 06/14/03

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On June 14, 2003 at 16:04:44, Peter Fendrich wrote:

>On June 14, 2003 at 15:53:51, John Merlino wrote:
>
>>On June 14, 2003 at 15:07:31, Peter Fendrich wrote:
>>
>>>On June 14, 2003 at 04:56:03, Ross Boyd wrote:
>>>
>>>>Hi all,
>>>>
>>>>My engine (TRACE) apparently hangs under CM9000. I don't own CM9000 and
>>>>therefore can't test it. So, I'm wondering if there is anything unique about
>>>>CM9000's implementation that I need to handle.
>>>>
>>>>Or is there a way to get CM9000 to print a debug file (like WB)?
>>>>
>>>>I output pv and bestmove in algebraic ie. e2e4 a8Q etc.... should it be in SAN
>>>>format?  PLEASE say No... :-)
>>>>
>>>>
>>>>The best idea would be to implement a log file for TRACE, I know. But life is so
>>>>short... and besides, I'm feeling so incredibly lazy. :-)
>>>>
>>>>Thanks for any advice/suggestions...
>>>>
>>>>Ross
>>>
>>>There is one thing that isn't following the WB protocol exactly (at least in
>>>CM8000). It sends the command "." to the engine regualary in order to get some
>>>information about the search. Within the WB protocol it is only sent during
>>>analyze but CM8000 (and probably CM9000) sends it during all search types.
>>>Maybe your program goes banana when it receives a "." in the middle of the
>>>search?
>>>
>>>/Peter
>>
>>A clarification on this. CM8000 (and CM9000) will only send the "." command if
>>the "Thinking Lines" window is open, so that it can get a regular update on the
>>progress of the search. If that window is closed, the engine will never receive
>>the "." command.
>>
>>jm
>
>
>ok, it still isn't 100% WB protocol. OTOH I think it would be a perfectly
>logical change of that protcol. It's quite easy to take care of it in an engine
>of your own but you have to be aware of the difference.
>/Peter

Agreed.

A few websites have documented this oddity of the CM GUI, and I think it is
starting to become "common knowledge". But, obviously, not quite yet....

jm



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