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