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