For Zen and CrazyStone, they might not be interested on 9x9, because 19x19 is their arena. Mogo is maybe the best candidate. In the TAAI conference last year in Taiwan, Olivier stated that Mogo will solve (or weakly solve?) 9x9 by winning 4 out of 7 games against some top professional player.
Aja ----- Original Message ----- From: Brian Sheppard To: [email protected] ; 'Aja' Sent: Wednesday, July 13, 2011 12:01 AM Subject: RE: [Computer-go] 19x19 opening books >I think 9x9 go, even though compared to chess in complexity, is still more complex than chess and that the book will have a little less impact, although still a lot. My projection is the opposite: I think that 9x9 will be "played out" within 5 years. Not weakly solved, exactly, but close to it. Zen and CrazyStone have the ability to start on that project already. My impression is that the opening books are routinely worth a few hundred rating points in 9x9 CGOS. I would cite Valkyria, which has a version that is playing near the top of the CGOS ladder most of the time. A comparable version was playing ~200 rating points within the last year, and I suspect that the opening book knowledge that comes from its long-term memory is the dominant contributor. I also cite the Little Golem server, which is dominated by programs that have opening books. Based on the work of Mogo and Valkyria, I suspect that if you take a pretty good player and create a feedback system then you get a great opening book. With an effective branching factor of maybe 2 to 3, you can get pretty far into the game. Brian
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