Author: Stephen A. Boak
Date: 01:49:16 12/28/05
Go up one level in this thread
On December 28, 2005 at 04:17:06, Rolf Tueschen wrote: >On December 28, 2005 at 03:12:23, Vasik Rajlich wrote: > >>Interesting game. I didn't like .. h6 and .. g5 by Rybka in the opening (as I >>suspect most human players won't), and there were a few moments in the endgame >>where better resistance could have been put up - but these are relatively minor >>points. >> >>The biggest issue was the incorrect sacrifice of the h6 pawn. The Rybka static >>eval incorrectly gives the following position (and others of a similar type) as >>roughly equal: >> >>[D] 8/1b2b1k1/pp1ppp2/nPq5/P1P1P3/2QRNPP1/8/1N2KB1r b - - 0 27 >> >>I'll keep to myself my proposed solution. It's a tricky issue and won't be >>handled until after the Rybka 1.2 release. If anybody wants to share here, I am >>all ears :-) >> >>Vas > > >I'm just an expert player and have plenty of weaknesses you as IM surely dont >have. But I know how I would see the given position. And excuse me if I >contradict an IM. > >1) Of course this position is good for Black. Period. > >2) Of course you cant exchange Queens in such a win/lose position! Period. > >3) Rybka is very good. Period. > >4) But the restrictions for chess in machine chess will always lead to such a >nonsense, namely how Rybka destroyed a promissing position. The reason is simply >the antique, historical, old, well known horizon effect. And there is no trick >to lead a machine around this obstacle. Not by killer moves nor by nullmoves. >Therefore - actually and for the next years - there is something wrong in your >whole approach with the plan for 1.2. > >5) There is no trick to avoid the specifical chess Law in computerchess. The >absolute Power of the Concrete in relation to the always very limited view of >the machine due to horizon blindness. In the game against Spike every >experienced player knows that he cant trade Queens in such an open attack >position. > >6) Somewhere also YOU (as experienced and tricky IM) must hide the weakness to >allow the telling brilliance of Rybka and that will be the key for your >competitors, talking in engine-engine competition at least. Where'd you get your soapbox? Perhaps I left mine out. :)
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