n=3的一些解
..0..2..0....0..2..0....0..2..0....0..2..0....0..2..0....0..2..0....1..2..1
..2..2..1....2..2..0....2..2..0....1..2..2....1..2..0....0..2..2....1..2..0
..0..2..0....0..2..2....1..2..0....0..2..0....1..2..1....0..2..2....0..2..0
..0..2..1....0..2..0....0..2..1....1..2..0....1..2..0....0..2..0....0..2..1