Some solutions for n=10
.-1....0....1....2....1...-2....1...-2...-2....2...-1...-2...-2...-1....1....1
..0...-1....0...-1....0....1....0....1...-1...-1....0....1....1...-2....2....2
..1....2...-1...-2...-1....0...-1...-2...-2....0...-1....0....0...-1....1...-1
..0....1....2...-1...-2....1....0...-1....1....1....2....1...-1....0....2...-2
.-1...-2....1....2...-1...-2....1...-2....2...-2...-1....2....0...-1...-1...-1
..0....1....0...-1....0....1...-2....1...-1....1....2...-1....1....2....0....2
..1....2...-1....2...-1....0...-1...-2....0....0....1...-2....2....1...-1....1
.-2...-1....0...-1....2....1....2....1...-1...-1...-2...-1....1...-2....2....0
..1....0...-1....2...-1....0...-1....2....0....2...-1...-2....0....1...-1....1
..0...-1...-2....1....2...-1...-2....1....1...-1....2....1...-1....2...-2....0
.-1...-2....1...-2...-1....0....1....2....2....0....1....2....0...-1...-1...-1
..2....1....0...-1....2....1....2....1....1...-1...-2....1...-1....2...-2...-2
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