n=4的一些解
..2..2..1..1....0..0..0..1....2..0..2..2....0..1..0..0....3..0..0..3
..2..3..0..1....2..0..1..1....3..0..0..0....1..1..3..3....3..3..3..3
..3..3..0..0....2..0..1..0....3..3..0..2....0..1..1..3....0..1..1..1
..3..0..0..2....0..0..0..0....3..0..0..2....0..1..2..2....1..1..3..3
..3..3.0...0…..2...2...0…..3.0..1..1...0..1..2...1...1...2...2...3...0
|