Re: [gnugo-devel] Joseki variations question

[Arend Bayer]

On Thu, 27 Mar 2003, Evan Berggren Daniel wrote:

> I noticed a problem in the game gnugo-3.3.17-ylamaki-200303262305.sgf.  At
> move 9, the position is:
>
>    A B C D E F G H J K L M N O P Q R S T
> 19 . . . . . . . . . . . . . . . . . . . 19
> 18 . . . . . . . . . . . . . . . . . . . 18
> 17 . . . . . . . . . . . . . . . . . . . 17
> 16 . . . X . . . . . + . . . . . X . . . 16
> 15 . . . . . . . . . . . . . . . . . . . 15
> 14 . . . . . . . . . . . . . . . . . . . 14
> 13 . . . . . . . . . . . . . . . . . . . 13
> 12 . . . . . . . . . . . . . . . . . . . 12
> 11 . . . . . . . . . . . . . . . . . . . 11
> 10 . . . + . . . . . + . . . . . + . . . 10
>  9 . . . . . . . . . . . . . . . . . . . 9
>  8 . . . . . . . . . . . . . . . . . . . 8
>  7 . . . . . . . . . . . . . . . . . . . 7
>  6 . . . . . . . . . . . . . . . . . . . 6
>  5 . . . . . . . . . . . . . . X O . . . 5
>  4 . . . X . . . . . + O . . . X O . . . 4
>  3 . . . . . . . . . . . . . X . X O . . 3
>  2 . . . . . . . . . . . . . . . . . . . 2
>  1 . . . . . . . . . . . . . . . . . . . 1
>    A B C D E F G H J K L M N O P Q R S T

Objectively, Q2 is the only move here. For GNU Go, I'd also be somewhat
satisfied iwth Q6.

I think this position is too rare to make this worth a variation in the
joseki database. Instead, we should teach GNU Go to understand that the
lower right is extremely urgent. There are many similar but not
identical positions. It's certainly worth a regression test.

Arend