Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..1..0..0..1....2..0..0..1....0..0..0..1....2..0..0..1....2..0..0..1
..2..1..1..0....1..2..1..0....0..1..1..0....0..0..2..0....1..2..1..0
..0..1..2..1....2..0..0..2....0..1..1..0....0..2..2..0....2..1..2..1
..0..1..0..2....1..1..0..0....1..0..2..0....0..2..1..2....0..0..0..0
|