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