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