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