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