Some solutions for n=5
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..1..0..1..0
..1..2..1..2..1....1..2..1..2..1....1..2..1..2..3....0..2..2..0..2
..1..0..0..0..2....0..0..0..1..0....1..3..3..1..2....2..1..3..3..2
..3..1..4..1..1....3..1..2..2..1....4..4..5..1..4....4..4..1..0..0
..0..0..4..5..0....3..2..0..3..2....5..6..6..5..1....0..2..1..5..1
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