n=4的一些解
..0..0..0..1..2..3..2..0....0..0..0..0..1..1..1..1....0..0..0..0..0..1..0..0
..1...0..1..1...1...2...2...2...2...2...0...1...2...1...0...2...0...2...0...0...0...3...0
..3..1..1..2..1..1..2..1....0..1..0..0..2..0..1..0....0..0..1..0..1..0..0..3
..2..3..1..1..0..1..1..0....2..0..3..0..0..2..0..2....3..0..0..2..0..3..0..0
..1..2..3..1..1..0..1..1....0..1..0..3..0..0..1..0....0..0..1..0..0..0..1..0
|