Wait, it _is_ online: http://www.vector.org.uk/archive/v103/selfridge103_94.htm (Ralph's one-liner solution to the N-Queens problem).
On 4/5/08, Devon McCormick <[EMAIL PROTECTED]> wrote: > > The Vector website tells me the issue is "Selfridge, R.G., The N-Queens > Problem in One Line, Vol 10.3, 94" but this is not online. > > On 4/5/08, Devon McCormick <[EMAIL PROTECTED]> wrote: > > > > There's an essay on the J-wiki about this - > > http://www.jsoftware.com/jwiki/Essays/N_Queens_Problem - though I think > > it may have a mistake: aren't there 96 solutions if one counts all the > > rotations and reflections of the basic 12 (not 92 as stated in the essay)? > > > > There's also a Dyalog solution: > > http://www.dyalog.dk/dfnsdws/n_queens.htm. I've seen the one-liner but > > don't recall in which issue of Vector. > > > > On 4/5/08, Dan Bron <[EMAIL PROTECTED]> wrote: > > > > > > > familiarity with the symbolism is crucial. > > > > > > > > > Absolutely (this is our common response to the "cryptic!" accusation). > > > > > > > > > > And I have a one line APL function for printing out all > > > > solutions for n queens on a board. > > > > > > > > > Send that along. I'd like to give a shot. > > > > > > > > > -Dan > > > > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > > > > > > -- > > Devon McCormick, CFA > > ^me^ at acm. > > org is my > > preferred e-mail > > > > > > -- > Devon McCormick, CFA > ^me^ at acm. > org is my > preferred e-mail > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
