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