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