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