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