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..1....0..0..0....0..0..3....0..0..1....0..0..0
..0..0..0....0..0..3....0..2..3....0..0..0....0..1..2....0..0..3....0..0..2
..0..0..0....0..1..1....0..1..3....1..1..3....0..3..3....0..1..1....1..1..1
..0..0..2....1..1..3....0..3..3....0..2..2....1..1..3....1..1..2....1..1..1
..0..1..1....0..1..2....0..2..3....1..2..3....1..1..1....1..2..2....2..3..3
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