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