[Computer-go] Seki in playouts

[Michael Williams]

Could anyone describe the basic implementation for detecting some seki
in a fast enough way to be used in playouts? I understand that it's
not practical to detect them all.

Thanks.
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[Peter Drake]

Orego doesn't do this directly. Instead, we massing passing a possible
move, but with a very low prior success rate (1 win in 10 runs). It
will be chosen if all other moves lead to losses.

--
Peter Drake
https://sites.google.com/a/lclark.edu/drake/

[Erik van der Werf]

On Tue, Aug 7, 2012 at 10:34 PM, Michael Williams <michaelw...@gmail.com> wrote:

Could anyone describe the basic implementation for detecting some seki
in a fast enough way to be used in playouts?  I understand that it's
not practical to detect them all.

Just prevent self-atari unless it makes a basic nakade shape and the surrounding group doesn't have eye potential elsewhere.

Erik

[Petr Baudis]

That sounds simple, but "just" testing if a move is self-atari is not so
straightforward, with possible connections to neighboring groups etc.
Also, you must allow throw-ins.

But yes, proper selfatari testing is the way to prevent breaking seki.

Petr "Pasky" Baudis