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