Re: [gnugo-devel] Wrong liberty counts in worms?

[Inge Wallin]

On Wednesday 15 October 2003 21:13, Gunnar Farneback wrote:
> Inge wrote:
> > E14 : (dragon E14) white string of size 6 (6.62), genus 0: (3,5,6,3) - is
> > a cutting stone
> > F15 : (dragon J14) black string of size 2 (2.67), genus 0: (4,3,5,1)
> >
> > The numbers in the parenthesis are the liberties, second order
> > liberties, and so on.  The liberties seem to be correct, but second
> > order and up seem to be totally bogus.
> >
> > Is this just me or is something seriously wrong here?
>
> It's just you who have forgot GNU Go's definition of higher order
> liberties, maybe? From dragon.texi:
>
>   @dfn{a liberty of order n} is an empty
>   vertex which may be connected to the string by placing n
>   stones of the same color on the board, but no fewer. The
>   path of connection may pass through an intervening group
>   of the same color. The stones placed at distance >1 may
>   not touch a group of the opposite color.

Good.  I did think it was strange that such a bug had gone unnoticed for so 
long.

        -Inge