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Subject: some thoughts on rybka's opening play. it is different from all others

Author: Joseph Ciarrochi

Date: 12:56:51 01/16/06


Hi folks,

I've been playing a no-opening book tourni, just to see how the engines handle
the opening stage of the game without a book (there four positions, involving
first moves of e4, d4, c4, or nf3). I'll post the results soon, but here is
something i've noticed.

Rybka loves to fianchetto its kings bishop, and is more willing to get itself
into a hypermodern position than any of the other engines. In contrast, when the
other engines play each other, you get positions that look more like what was
played in the 19 century by people like anderssen (you know, old forms of the
guico pianos, or scotch game. crazy tactical positions, etc. Engines other than
rybka want to be DOING something, NOW)


 Here is a game currently running with fruit as white and rybka as black. fruit
thinks it has an advantage. Rybka thinks its about even

1. c4 (now out of book) nf6; 2. nf3, g6 (does any other engine play g6 this
early without book help. maybe hiarcs hypermodern?).

3)nc3, bg7, 4) e4,  (grab the centre. Every engine does this early except rybka
sometimes doesn't)
4)....0-0 ; 5) d4 c5, 6) d5, d6 (rybka gets into a lot of kings indian
formations when you don't use book)
7) be2, nbd7; 8) 0-0, a6; 9) qb3, b6; 10) bg5, bb7; 11) h3, qc7;


I am looking forward to rybka being able to inform opening theory, rather than
just following it.


What would you folks rate this position? Does white have a solid +.6 advantage
as fruit 2.2.1. thinks, or is it equal, as rybka thinks?


best
joseph










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