On 01/07/2013 03:02 PM, Vlad Dumitrescu wrote:
Hi!
On Mon, Jan 7, 2013 at 2:51 PM, Don Dailey <[email protected]
<mailto:[email protected]>> wrote:
2013/1/7 Don Dailey <[email protected]
<mailto:[email protected]>>
I have a question concerning a related question, mirror
go. On an even board the second player can presumably
just mirror the opponent and never lose but I am not sure
I buy that. I am a very weak player myself but is it
true that cannot force your opponent into a bad move if he
mirrors you? And if mirror go is a valid way to stay
even couldn't a pro just sacrifice something in the center
to break the symmetry?
I'm talking about even boards, not odd boards. I know
that odd boards cannot be mirrored indefinitely.
It's easy to come up with a way to force breaking the symmetry: play
the center as a cross-cut and black then gives atari: if white gives
atari too, black captures and white cannot do likewise because of the
missing captured stone. So white is forced to protect the atari and
symmetry is broken. Black can then get a better position in the center
in sente.
regards,
Vlad
But you can't get a cross-cut in the center with mirror go.
Rémi
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