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