Re: [computer-go] Legal Configuration

[Mark Boon <tesuji@xxxxxxxxx>]

Stuart Yeates wrote:

> > How is a legal configuration defined for Go? Thanks.
> >    
> Generally a legal configuration is one that could have been arrived
> at via a series of legal moves (for some rule set). Illegal
> configurations typically include groups with no liberties.
>  
"Typically include"? ;-)  Are there positions in which each chain has at 
least one liberty, but at which you cannot arrive through legal play?

There isn't as long as pass is a legal move at any point in the game, in 
which case determining legal positions is trivial: the set of illegal 
positions is equal to the positions with chains without liberties.
_______________________________________________
computer-go mailing list
computer-go@xxxxxxxxxxxxxxxxx
http://www.computer-go.org/mailman/listinfo/computer-go/