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Subject: Re: Rebel 10's tactical blindness....

Author: blass uri

Date: 03:03:43 05/23/99

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On May 23, 1999 at 05:19:11, Dave Gomboc wrote:

>On May 22, 1999 at 21:51:18, Chuck wrote:
>
>>On May 22, 1999 at 20:59:35, Mark Young wrote:
>>
>>>In the game played today with GM Rohde's we have another example of Rebel 10's
>>>tactical blindness with its 26th move f4. This is just the latest example of
>>>Rebel 10's tendancy to miss tactics that other programs understand with ease. I
>>>understand that all programs miss some tactics from time to time, but Rebel 10's
>>>frequency of tactical blindness is perplexing to me. It misses stuff that other
>>>programs see in seconds, even after playing a blunder its evaluation my not drop
>>>for many moves before understanding the danger.
>>>
>>>In the latest example I gave the position to Rebel 9, it had no problem seeing
>>>that both 26. f4 and Bxb7 lose quickly and playing the correct 26. Bg2 as other
>>>programs play.
>>>
>>>On the other hand even after the move 26 f4, Rebel 10 still think it has an
>>>advantage for almost 4 mins, before seeing the error of 26. f4.
>>>
>>>Is this tactical blindness a bug in Rebel 10, or a justifiable design choice to
>>>let rebel strengthen other areas of its play?
>>
>>Probably only Ed Schroder can answer your question, but I don't think that
>>Rebel 10 was that much out 'on it's own'. It takes Fritz 5 better than 2 minutes
>>on my AMD K6-2 350 to select Bg2 (I didn't officially time this). But Robert
>>Hyatt mentions that some strong players (GM's?) stated that White is lost after
>>Bg2 as well. I see that Bg2 relieves the threat of a Black Queen check on the
>>1st rank, or rather the mate threat involved there, and studying the position
>>from there I would hazard that White might hold. If someone gets any Grandmaster
>>analysis I would like to see it posted. Of course, I've lost games myself
>>following grandmaster analysis before, but as this game shows, it's still the
>>best opinion we have.
>>
>>Chuck
>
>I thought I saw someone post the win after Bg2 in one of the posts here.  But I
>don't recall which, sorry. :-)  You can scan through them if you are desperate,
>I guess.
>
>Dave

If you mean to Paul Richards then I think that he did not give the right line
for
white.
After Bg2 Qc2 Qe1 is the right move and not the passive Qf1.

Uri



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