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