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