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