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