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