Choco Banana rules copied from pzprxs:
Shade some cells on the board. A group of shaded cells must form a rectangle or square. A group of unshaded cells must not form a rectangle or square. A number indicates the size of the (shaded or unshaded) group that overlaps it. A group can contain one or more numbers, or none at all.
Theme: 3/9 (happy Miku day!)
