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