n=6的一些解
..0....4....2....3....4....0....3....2....2....0....4....0....2....3....4....2
..2....1....2....3....4....3....0....1....4....2....1....3....1....4....1....1
..2....2....1....2....3....0....1....0....2....1....1....1....1....0....4....4
..2....2....4....0....0....2....2....1....0....1....1....3....2....4....4....1
..2....2....1....3....1....4....4....2....0....3....3....3....1....1....0....2
..1....1....1....1....2....0....0....2....3....1....1....0....2....1....1....1