n=4的一些解
.-4...-2...-4...-4...-4...-2...-3...-3...-3...-1...-5...-5...-4...-3....0...-2
.-3...-2...-2...-1....0...-2...-3...-1...-2...-1...-1....0....0...-2....0...-2
..3....2....0....0....1...-2....3....1....1....1....2....0....2....0....0....0
..4....2....6....5....3....6....3....3....4....1....4....5....2....5....0....4