Some solutions for 4X3
..0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2
..2..2..0....3..2..2....0..1..1....1..1..0....1..3..2....2..3..2....0..1..1
..0..2..3....1..2..1....1..1..3....1..2..2....3..0..0....1..1..3....1..0..0
..1..2..3....2..1..0....1..2..0....1..1..2....3..1..2....2..0..0....0..2..1
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