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