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Subject: Re: Fritz 7 (with MMX) analysis is buggy!

Author: William Penn

Date: 07:44:53 11/09/01

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On November 09, 2001 at 10:13:16, Jonas Cohonas wrote:

>On November 09, 2001 at 10:11:14, Uri Blass wrote:
>
>>On November 09, 2001 at 08:20:36, Jonas Cohonas wrote:
>>
>>>On November 09, 2001 at 07:26:21, William Penn wrote:
>>>
>>>>On November 09, 2001 at 04:28:37, Chessfun wrote:
>>>>
>>>>[snip]
>>>>
>>>>>I agree, I think Fritz 7 is a great engine.
>>>>
>>>>[snip]
>>>>
>>>>Are you overlooking the analysis bugs? I continue to find examples of stupid
>>>>blunders involving Queens when using the Fritz 7 engine (the one with MMX) in
>>>>Infinite Analysis mode. It attempts to give the Queen away for free, which
>>>>opponent ignores!
>>>>WP
>>>
>>>Could you post the positions in question?
>>>
>>>Regards
>>>Jonas
>>
>>He already did it
>>
>>see http://www.icdchess.com/forums/1/message.shtml?195455
>>
>>Uri
>
>Thank's Uri
>
>Regards
>Jonas

That's one of three such obvious blunders with the Queens in Fritz 7 (with MMX)
Infinite Analysis that I've noticed. So far I've only noticed it in positions
involving active Queen play. I analyze lots of positions and haven't tried to
keep track of the particular positions. I imagine if you pick out almost any
position involving Queen(s) and Pawns and pieces with active play, and analyze
it in Infinite Analysis mode with that engine, you will get some fairly obvious
goofs too. Of course I don't know, but at least it is goofy on my
system/installation. [W98se, Deep Fritz GUI, Celeron 500, 256MB RAM] I have not
seen such serious analysis errors with any other engine, and I've tried quite a
few of them in different versions (Fritz, Hiarcs, Shredder, Junior). Someone
suggested that the analysis may be faulty beyond the first half-move, but that
the engine is actually working OK to find the best move. Maybe, maybe not, I
have no idea. But my main interest is accurate analysis, so it is a serious
fault to me.
WP



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