n=5的一些解决方案:
.-1....0....1...-1...-1....1....0...-1....1...-1...-1...-1...-1....0....1....0
.-1...-1....1...-1....1....1...-1....1...-1....1....0...-1....1...-1...-1....1
.-1....0...-1....0....1....1...-1...-1....1...-1....1...-1....0....0....1....1
.-1...-1....1...-1....1....1....0....0...-1...-1....0....1....1....1....1....1
..1...-1....1....0...-1....1...-1...-1...-1....1....1....1....0....0...-1....0
..1....0...-1...-1....1....0....0....0....1...-1....0....1....1....1....1....1