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