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