[Computer-go] Semeais

[Kahn Jonas]

On Fri, 14 Jan 2011, terry mcintyre wrote:

> Any solution must balance competing concerns. What happens during a ko
> fight? Threats and counterthreats and sacrifices may disturb all neat
> solutions.

I thought that up to now ko was just ignored during playouts (except
for strict legality). Given the level at which they are played during
this phase, I would not expect ko to change that much. I might be wrong,
of course.
And if you mean ko in the semeai, then I guess the automaton should just
win the ko without answering the threat. OK, there might be a problem if
there are two semeais on the board. Now if we must arrive to this corner
case (two semeais, one with ko) to really have problems, this would
already be huge progress.
Moreover, even that could be solved by the correction I had made
earlier, that is that semeai should also be calculated for the losing
side, in case it wins it with ko. I thought this could not happen in the
playouts but only in the tree, but I was wrong, obviously.

Naturally, these automata might get very complicated, so it's probably
not a silver bullet, once again...

Jonas