n=3的一些解决方案:
..3...-2...-3....0...-2....3...-2....2...-3...-2...-1....2....1....2...-2....3
..0...-3....2...-1....3...-1...-2....2....3....3....1....2....1...-2....1...-1
.-2....1....1....3....0....1....2...-1....0...-3...-2...-2...-2....2...-3...-3
..2....2....1...-2....1...-3....1...-2....2...-1....2....1...-1...-3....1....2
.-3....2...-1....0...-2....0....1...-1...-2....3....0...-3....1....1....3...-1