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