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