A grid-based logic puzzle
Color each cell black or white… and give your brain a workout.
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Shape constraint
If you see a pattern above the puzzles that has a light blue background and is rotated 45°, all groups of that color must have that exact shape (rotations and mirrors are allowed).
In this example, both black groups and white groups must form a 2x2 square so this cell cannot be white.
When a group has reached its final form, its borders must be closed.
The group's shape can be rotated or mirrored.
When a region is too small to contain the shape, it must be the opposite color.
In this case, the black "L" does not fit here so this last cell will be white.
