6X4的一些解决方案
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....1..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0
..2..0..0..0....0..0..0..0....1..0..0..0....1..0..0..0....2..0..0..0
..2..1..0..1....0..0..0..1....2..0..1..1....0..0..0..1....1..1..0..0
..1..1..1..1....2..2..2..2....2..0..1..0....1..2..1..1....0..0..0..1
..1..2..1..2..1..2..0...0...1...0...0...2...0...0...1...2...1...1...2...2...0
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