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Subject: Re: Positions from the WCCC2005: Deep Sjeng - Zappa

Author: Ed Schröder

Date: 09:46:47 08/26/05

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On August 26, 2005 at 12:32:03, Gian-Carlo Pascutto wrote:

>On August 26, 2005 at 12:24:05, Robert Hyatt wrote:
>
>>Maybe I don't understand the problem or "bug" I am supposed to have here???
>
>Do you have a multipv mode? It would be good to see the evaluations of Rb1 and
>Qe2 from the root position, for increasing depths.
>
>It's easy to find Rc3 after Rb1 because you will generally be nullmoving for the
>other player. If you can't see it at the root you might decide at greater depth
>that Qe2 is not all that great and switch back to Rb1 instead. This is what
>happened in the game.
>
>Crafty thinks at low depth that Rxd3 wins for black (and hence won't play Rb1),
>but this is wrong (it's a draw). The variation looked like a bug, but I forgot
>that you don't handle checks in the qsearch at all...

6 plies here to see the Rb1 loss, maybe Bob is right.

BTW, congrats with your performance at the WCCC.

Ed



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