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