n=5的一些解
..2..1..0....2..1..0....0..1..1....1..2..1....1..0..1....1..1..2....2..1..0
..1..2..1....1..0..1....1..2..2....1..0..1....1..0..1....0..2..1....2..1..0
..0..1..0....0..1..2....1..0..0....1..2..1....0..1..2....2..0..1....1..0..1
..2..1..2....1..0..1....1..2..2....2..1..0....2..1..0....0..2..1....2..1..0
..2..1..2....1..0..1....1..0..0....2..1..2....1..0..1....1..1..0....1..0..1
..0..1..0....2..1..0....1..2..2....0..1..2....0..1..2....2..0..1....1..0..1