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