Easy, Medium, Hard and Difficult levels. Puzzles show a "SOLVED" symbol over it, while others will have an "UNSOLVED" symbol based on the puzzle solved.
On start of the quiz, you see the image into pieces, by clicking on the pieces of the image you keep moving in order to arrange it in a proper order to solve it.
It also provides a hint to show how the complete will look like.
Enjoy solving these puzzles!!!!