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