This game is already well-known; here you should find differences in two pictures.
Notice, we’ve changed the principle of finding the differences.
“A correct” picture is placed on the left.
You should find and mark all the differences in the picture placed on the right. A fragment that you consider to be different will disappear if to click on it. Then the fragment will become the same as in the picture placed on the left.
Both pictures will become identical if you find all ten differences.
The task is not easy, your attention should be concentrated!