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