n=4的一些解
..3..1..2..0..1..2....3..3..3..3..3..0....2..1..3..2..1..0....2..3..1..2..0..1
..3..0..3..3..3..0....3..2..1..0..2..1....1..2..0..1..2..3....1..1..1..1..1..1
..3..2..1..0..2..1....0..1..2..3..1..2....0..3..3..3..0..0....3..2..1..3..2..1
..0..1..2..3..1..2....3..3..0..3..0..3....2..1..0..2..1..3....2..3..1..2..0..1
..3..3.0..3.0..3..0..3..0..2..1..3.2...1...1...2..3.1...2...2...3...1...1...1...1...1...1...1...1...1...1
..0..2..1..3..2..1....0..1..2..0..1..2....0..0..3..0..3..0....3..2..1..3..2..1
|