n=6的一些解决方案:
..2....2....3....2....0....0....3....3....2....3....3....3....1....0....1....3
..5....4....5....5....1....3....3....4....5....4....4....4....1....0....1....3
..2....3....5....1....5....5....2....5....4....5....2....3....2....5....2....0
..5....3....1....2....2....4....4....5....5....1....5....5....4....5....5....2
..5....2....5....5....3....4....5....5....4....3....5....4....2....5....4....4
..3....4....5....4....5....5....5....5....5....4....2....4....4....3....5....5