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Subject: Re: rybka wins with the duffer opening!: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qe

Author: Rolf Tueschen

Date: 14:01:33 02/07/06

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On February 07, 2006 at 16:28:41, Robert Hyatt wrote:

>I think your conclusion is flawed.  :)  You are assuming black just found a
>masterful way of playing the opening.  What about the idea that white just
>totally screwed this up, rather than black finding a new and better move.  Qe5
>is not in any book I have, most likely for good reason...


In a higher sense White indeed played the opening in a second-best style. The
interesting move 3-Qe5 leads White to play Be2 although normally the B is better
on c4. We have a typical reversed move order in this opening. Look at this
endposition:

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[PlyCount "10"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 c6 5. Be2 Qc7 *

If Black would have played the normal Qa5 and then 4- c6 then White would either
play 5.d4 or 5.Bc4 - the two main continuations. But he plays Be2, but then
Black doesnt lose much with his tempo loss 5- Qc7. Because we have now identical
position with the played moves in the Fruit vs Rybka game. We could conclude
that Black isnt inferior due to the not best play by White. White should now
play d4. With Bc4 he would lose a clear tempo.

The move Qe5 pleases me for a single reason and this is the usual method you are
building opening books, at best from GM games. Here Rybka is almost playing like
a strong 2100 human player who's trying to bust your whole opening prep. Of
course you couldnt even think about such a move because in human vs human chess
such a move is inferior - because human players know how to exploit its
weaknesses. Black needs 3 moves before he can castle! So White has extreme
development advantages. So even Bc4 is possible after castling.

All in all I would say that if Rybka plays like this against strong and above
all flexible humans then Good Night, Rybka. But against a 2700 [!] computer
player <gg> everything is possible because of this inborn lack of flexibility.
No pun intended... I'm a lay.



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