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