At 06:17 AM 4/6/2007, you wrote:
On Fri, 2007-04-06 at 13:48 +0100, Jacques Basaldúa wrote:
> Darren Cook wrote:
>
> > All except joseki-knowledge is board-size independent.
>
> Maybe human player's adapt to different board sizes without
> even noticing. But if you try to model strategy with algorithms
> it is totally board size dependent.
Doesn't that just imply the model is incorrect? If the model
captures the true spirit of the game, it shouldn't matter.
....
There may be some formal (but likely complex) way to describe a
correct opening play strategy on any size board that is not
board-size dependent.
mr. yang uses the ideas of short and long
extensions and high-low combinations in the
beginning. (a short extension being 1 or spaces
and a long being ideally 5 spaces). this tends to be eficient.
I'll try to give an example:
On small boards, it seems like it's correct to play to the
center point on the first move? Why? The rule: always
play to the center point might NOT be a board size independent
strategy but might work well for boards smaller than say 11x11.
But if you could capture the REASON for this, you might be
able to formulate a better strategy for playing the first
move that would work on all boards.
playing in the center on a large board is
reasonable. the trick is to make the stone
useful. on a large board, this leads to an
unusual style of play. black wins all ladders and
has an advantage in all fights. many josekis are unfavorable for white.
There are underlying reasons for everything and that is what must
be captured to achieve a boardsize independent strategy.
Of course I'm getting rather theoretical. I understand that you
are looking for practical solutions and approximations.
i suspect that the short/long and high/low
heuristic would be useful during the fuseki stage.
thanks
---
vice-chair http://ocjug.org/
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