Want to test your intelligence? Then try to complete all the levels of the addictive puzzle game Stack and Merge. Four poles will be visible in front of you on the playing field. Under them circles of various colors with numbers printed on them will appear. You will have to take one item and transfer it to the playing field. There you will have to put it on the pole of your choice. Remember that circles with the same numbers should be worn on top of each other. Then they merge, and you get points for it.