The dog named Ben is well able to speak, and yet he well knows how to make the puzzle that need to be addressed. One of them is right in front of you. Watching the two supposedly identical pictures you have to look at one of these differences, which are hidden from your eyes. With the help of a special device through every detail until you find the right one. Your time is limited, so do not hesitate for a long time, but do not be mistaken - this will remove the glasses ha. Find all the differences go to the harder levels.