n=4的一些解:
..1..1. .0..0. .0..0. .0..0. .0..1. .1..1. .1..1. .1..1. .1..1. .0..1
..1..1. .1..1. .1..0. .1..0. .1..1. .1..1. .0..0. .0..1. .0..0. .1..1
..1..1. .0..1. .1..0. .1..0. .0..1. .0..0. .0..0. .1..0. .0..1. .1..0
..0..1. .0..1. .1..0. .1..1. .1..0. .0..0. .0..0. .1..0. .1..1. .1..1