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