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