n=3的一些解
..2..2..2..3....1..0..1..1....1..3..2..0....2..3..2..1....0..2..0..2
..2..3..2..3....0..0..0..0....3..3..2..0....3..2..2..2....2..2..2..2
..2..2..3..2....1..0..1..1....2..2..2..0....2..2..3..2....0..2..3..3
..3..3.2...3...1.0..1..2...0...0...0...0...1...2...2...2...2...2...2...3...0
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