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