n=5的一些解决方案:
..3....3....1....0....2....2....2....3....0....0....0....2....1....5....0....0
..2....2....3....3....2....0....1....2....3....3....5....0....1....0....1....0
..0....0....1....0....1....3....0....0....1....0....0....2....3....0....1....2
..0....0....1....0....1....1....2....1....1....0....0....1....0....0....1....2
..2....1....0....3....0....1....1....3....1....0....4....0....1....0....1....1
..0....3....0....0....0....1....0....0....2....2....1....2....1....2....1....0
..3....0....3....1....1....0....2....2....2....1....0....3....0....2....3....3