Some solutions for n=3
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....0....0....0....1....1....0....0....0....0....1....0....1....1....0....0
..1....1....1....1....0....0....1....1....1....1....0....1....0....0....1....1
..2....2....0....2....2....0....2....2....2....2....2....0....0....2....1....2
..3....3....0....0....0....2....3....2....0....1....3....0....2....3....0....3
..0....4....2....3....3....0....1....3....1....3....0....2....3....3....2....1
..4....1....3....1....3....0....0....0....3....4....4....0....0....4....3....4
..1....2....4....4....2....1....4....4....2....3....5....0....2....0....4....1
..5....4....2....2....4....3....4....0....4....3....0....1....4....0....3....2
..4....5....0....0....5....4....0....5....0....2....2....3....1....3....3....4
..4....0....0....3....2....3....4....5....1....4....2....4....4....1....0....3
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