n=4的一些解
..0..1..0..2..1....0..1..0..2..0....0..1..0..2..0....0..1..0..1..0
..0..1..0..2..1....0..1..0..2..0....0..1..0..2..0....0..1..0..1..0
..0..1..0..2..1....1..0..1..0..1....2..1..0..1..2....0..1..0..1..0
..0..1..0..2..1....1..0..1..0..1....2..1..0..1..2....2..1..0..0..2
..1..2..0..2..0....1..0..1..1..0....1..2..1..1..0....2..0..2..0..2
..1..2..0..2..0....1..0..1..1..0....1..2..1..1..0....2..0..2..0..2
|