[Computer-go] Some CrazyAnalysis of Zen game

"Ingo Althöfer" 3-Hirn-Verlag at gmx.de
Wed Mar 20 12:14:21 PDT 2013

Thanks Petr, for the comments.

> Zen has lost after fighting hard
> and ending with a large white group in its moyo that had miai
> for life that Zen's simulations likely didn't understand; if they did,
> it seemed like black had some advantage and would have good chances.

I looked through Zen's game with the analysis tool of CrazyStone.
Looking at the histograms (how many random playouts won at which margin)
I found some interesting structures:

* At move 110 it looked like normally distributed.
* At move 120 the development of a "right" shoulder started.
* After 147 for the first time a side maximum occured (around score +79.5)
* In the final position, after move 221, crazy shadows were 
fully developed.

It seems that the mailing list does not allowed png attachments.
Therefore you have to go to
to see diagrams from CrazyAnalysis.

Question to stronger go players: Where do you think started 
Zen's problems?

Cheers, Ingo.


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