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