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