"Einstein said that only 2 percent of the people living in the world can solve this puzzle"
no, he didn't, this is an old riddle made by someone who called it "einstein's riddle" just to get people's attention and this guy said that only 2% can make it, which is also a trick to get attention "omfg so hard ? i must try it omg einstein maed it !"
cool riddle tho i remember ive done it for the first time few years ago, that took me about 15mins