Thanks Dmitri,

I've added a small bit of extra code to make the written file contain 'X' and 'O' as the queens and empty spaces respectively.

I've tested it up to n=12 now, which takes about 2 1/2 hours on my P120 laptop (Debian with X and enlightenment running.) I wrote it just for fun, as I don't come from a rigorous programming background but am trying to work through some of the things that a CS undergrad would have to do.

Elgon

"What this book tells me is that goose-stepping morons, such as yourself, should read books instead of burning them."
       - Dr. Jones Snr, Indiana Jones and the Last Crusade