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