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

Author: Terry Ripple

Date: 00:05:12 05/24/99

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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?


 Well,CM6000 likes the same move and believes its an even game! But allow Chess
Master to continue its search for 7 min.:17 sec.and it then shows a -4.57 score
for the move f4! It only changes its move to Bg2 after thinking for 16 min.:18
seconds! This test was on a 266 mhz.,AMD K6 with 64 mb.RAM. Hashtable at 16MB.



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