StorySquared: Home. Partners. Update: We've put this puzzle in a handy portable/printable PDF version here so you can find out how smart your family really is this holiday season.
Cheers. This brainteaser, reportedly written by Einstein is difficult and Einstein said that 98% of the people in the world could not figure it out. Which percentage are you in? There are five houses in a row in different colors. In each house lives a person with a different nationality.