n=3的一些解
..2....1....0....0...-2...-1....1....0....0....1...-2...-2...-1....0...-1....2
..0...-1....2...-2....1....1....0....2...-2....1....1...-1....2....0...-1...-1
.-1....1...-1....0...-1....0...-2...-2....2...-2....1....1....2...-1....1...-2
.-1...-1...-1....0....1....2...-1...-2...-1....2....0....0...-1....2....2....0
..0....0....0....2....1...-2....2....2....1...-2....0....2...-2...-1...-1....1