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