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[computer-go] Legal Configuration



> The number of legal configurations can be estimated by computer 
> simulations. 

[Hello everyone, wow what a lively list. I am impressed by the level of
discussion going on as a newbie.]

How is a legal configuration defined for Go? Thanks.

iZzeT


> These numbers follow a well defined trend. It could be a very good 
> mathematical research to try to derive the function describing this trend. Success in 
> deriving this function could shed light on the topological properties of Go 
> positions.
> 
> Daniel Liu
> 
> In a message dated 1/26/05 11:29:58 AM Pacific Standard Time, birk@xxxxxxxxxxxxxxxxx 
> writes:
> 
> 
> > > The number of legal configurations can be estimated by computer 
> > simulations. 
> > > Randomly generate a large number of configurations and count how many are 
> > > legal.
> > 
> > I did this in 1999 and sent it this list:
> > Boardsize    Legal Positions (sample size > 1e6)
> >   3x3:         64.4% 
> >   5x5:         48.9%
> >   7x7:         36.0% 
> >   9x9:         23.5%
> > 11x11:         14.8%
> > 13x13:      8.69%
> > 15x15:      4.78%
> > 17x17:      2.46%
> > 19x19:      1.19% 
> > 
> 
> 
> --part1_146.3f15d8bf.2f49a3ea_boundary
> Content-Type: text/html; charset="US-ASCII"
> Content-Transfer-Encoding: quoted-printable
> 
> <HTML><FONT FACE=3Darial,helvetica><HTML><FONT  SIZE=3D2 PTSIZE=3D10 FAMILY=
> =3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0">These numbers follow a well defined=
>  trend. It could be a very good mathematical research to try to derive the f=
> unction describing this trend. Success in deriving this function could shed=20=
> light on the topological properties of Go positions.<BR>
> <BR>
> Daniel Liu<BR>
> <BR>
> In a message dated 1/26/05 11:29:58 AM Pacific Standard Time, birk@xxxxxxxxxxxxxxxxx=20=
> writes:<BR>
> <BR>
> <BR>
> <BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT=
> : 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">&gt; The number of legal config=
> urations can be estimated by computer simulations. <BR>
> &gt; Randomly generate a large number of configurations and count how many a=
> re <BR>
> &gt; legal.<BR>
> <BR>
> I did this in 1999 and sent it this list:<BR>
> Boardsize&nbsp;&nbsp;&nbsp; Legal Positions (sample size &gt; 1e6)<BR>
> &nbsp; 3x3:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 64.4% <BR>
> &nbsp; 5x5:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 48.9%<BR>
> &nbsp; 7x7:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 36.0% <BR>
> &nbsp; 9x9:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 23.5%<BR>
> 11x11:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 14.8%<BR>
> 13x13:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8.69%<BR>
> 15x15:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4.78%<BR>
> 17x17:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.46%<BR>
> 19x19:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.19% <BR>
> </BLOCKQUOTE><BR>
> <BR>
> </FONT></HTML>
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