n=2的一些解
..0..0....0..0....0..0....0..2....0..0....0..0....0..0....0..0....0..0....0..0
..1..2....2..2....1..1....2..0....2..2....0..0....1..2....2..2....1..1....2..1
..2..0....0..1....2..0....0..0....2..0....1..2....0..0....0..1....0..0....1..0
..0..0....1..1....1..1....1..1....1..0....2..2....0..1....1..2....2..1....0..0
..2..2…..2..2…..2..2…..1..2…..0..2…..0..2…..1..0…..0..0…..0..0…..0..2
..2..2....0..1....2..2....0..0....2..2....1..1....2..2....2..2....1..2....2..2
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