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