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