[Computer-go] Board Sizes

Don Dailey dailey.don at gmail.com
Mon Jan 7 08:43:37 PST 2013


On Mon, Jan 7, 2013 at 11:19 AM, David Ongaro <david.ongaro at hamburg.de>wrote:

> Am 07.01.2013 um 17:01 schrieb Michael Alford:
>
> > On 1/7/13 12:08 AM, "Ingo Althöfer" wrote:
> >
> >> Go is traditionally played on boards of odd sizes (9x9, 13x13, 19x19,
> ...)
> >> and almost never on even ones (10x10 or 18x18 ...). What are the reasons
> >> for this?
> >>
> >> Ingo (has observed something and wants to put it in context).
> >
> > Interesting discussion and links. I remember reading, although I cannot
> name the source, that board size was set at 19 due to extensions from the
> corner to the point under the side hoshi, only one player can extend to any
> side point, the other player is left with a less than optimal extension, if
> the board is larger, both players can make a proper extension, so 19 is the
> size which preserves the competition for that extension.
>
> Why we settled on 19x19 is another question compared to why we use uneven
> board sizes.
>
> Anyway, people a really good in making up convincing reasons for some
> arbitrarily decisions. But this proves nothing (just look into split-brain
> research). I found the research of
> http://www.youtube.com/embed/JMDjpSQUH74. According to him 19x19 is just
> much nearer to the number of days in a year than 17x17. Therefore a board
> of this size is more useful as a calendar.
>

I think many ancient people used a 360 day calendar - so 361 would be a big
improvement!

Don





>
> Regards
>
> David
>
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