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