http://www.perlmonks.org?node_id=125946


in reply to Efficient N-Queen solution with Perl

Those poor monks who are wondering what on earth the N-Queen problem actually is, will probably be enlightened by looking here.

In sort, place N queens on an N by N chessboard, such that no queen can take any other queen.

The N-queen problem has been around for a while, as you probably guessed from the aforementioned page calling a 1977 article "recent".

Cheers,
Paul