and there are nontrivial arguments concerning points way out near the center.
s. On Wed, Dec 10, 2008 at 3:39 PM, terry mcintyre <[EMAIL PROTECTED]> wrote: > ________________________________ > From: tony tang <[EMAIL PROTECTED]> > > >>> Back to the original question - accounting for symmetry, there 55 >>> distinct opening moves on a 19x19 board. > >>Are there a noted collection of these opening moves? if so could you direct >> me to the > material? cheers > > Do you mean the 55 distinct opening moves? Divide a 19x19 grid along the two > diagonals, and the vertical and horizontal midlines; you have eight > identical pie slices. The number of points in any triangular slice is the > sum of 1,2,3..10 - or 55. The slices share points along the common edges. > > Most of those 55 distinct moves are rarely used in the opening. I once heard > a simple rule which seems to cover just about everything interesting: > "consider only moves which are on the 3rd and 4th lines, and/or within a > manhattan distance of n, for some small n, of some other stone already on > the board." If memory serves, David Fotland mentioned this at the Portland > Congress. Some players favor opening moves on the fifth line, however. > > > > _______________________________________________ > computer-go mailing list > [email protected] > http://www.computer-go.org/mailman/listinfo/computer-go/ > _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
