Re: [gnugo-devel] CGF2004

[Arend Bayer]

I just went throught the Aya game, and will claim it for creating test
cases. The other games are still up for grabs :)

Gunnar wrote:

> Aya
> ---
> Move 28 (S16)
> Looks like GNU Go is completely tricked here. Can white even capture
> the S18 stones? To me it looks more natural to sacrifice two stones
> with R15, P17, P18 and then connect at O16.
Yup. This is the kind of position that IMHO is impossible to ever get
right without some kind of general purpose look-ahead.

> Move 34 (S14)
> S14 is unreasonable since black can just play P18 to capture the
> corner. (The ladder doesn't work.) I don't see that white has anything
> better than to sacrifice the R18 stones as before.

But S14 still seems best. (White can build up a small wall on the right
side with ataris after black plays P18.)

> Move 118 (K19)
> This must be hallucination. White can't make anything with those
> stones after black cuts at G19.
>
> Move 162 (M14)
> The N4 connection is urgent and the only move.

I didn't analyze it closely enough yet, but it seems to me that the status
of this big white group changed a couple of times during the game. It's the
kind of problem I want to solve with my big owl escape patch. (Which at
the moment does not even compile, but I hope to get some more work on it
done in the near future.)

Arend