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Subject: Re: Rare fact Rybka lost from 3.14 advantage

Author: Uri Blass

Date: 14:48:59 01/30/06

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On January 30, 2006 at 13:09:20, Robert Hyatt wrote:

>On January 30, 2006 at 12:31:44, George Tsavdaris wrote:
>
>>On January 30, 2006 at 11:25:37, Robert Hyatt wrote:
>>
>>>If you play enough games, you will see it lose from +5.  And if you play even
>>>more, you will probably see it lose a +8 game on very rare occasions.  We've all
>>>seen that happen...
>>
>>LOL!  -14.27 for black's favour at 16 ply but only 0.00 at the end.....:-)
>>Not a verified drawn position, but Me-again Rybka 13b from this position ended a
>>draw.....
>>[D]nk1b4/q1p1p2p/rpB1N3/pPpP4/PpP5/rP5P/1KP5/8 b - - 0 1
>
>The only thing I hope you won't see is a + mate score and then white loses.  :)

Even this can happen as long as rybka does not consider underpromotions.

Uri



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