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