DragBoxes

"Colorful characters pull away with colorful suitcases.
Characters of different colors correspond to suitcases of different colors.

There are many colorful Baggages and colorful people.
People of the same color can pull away Baggages of the same color.

The prerequisite is that three Baggages of the same color must be combined before a person can pull them away.

Challenge your logical ability."