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