Some solutions for n=4
..0..3..3..0....3..3..0..0....0..0..3..3....0..0..0..3....0..0..3..3
..3..1..3..3....3..2..0..0....3..3..1..2....0..3..3..1....0..3..1..3
..3..3..0..1....0..0..2..0....3..3..0..0....3..1..3..3....3..1..2..0
..0..3..1..2....0..0..2..2....0..0..2..0....3..3..0..1....3..3..1..1
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