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