This riddle needs concentration and logic. It s also sometimes attributed to lewis carrol although there s no evidence that either of them actually wrote it.
Legend has it that einstein wrote this complicated riddle and he said only 2 percent of people could solve it.
Einsteins hardest riddle.
It is a good brain. Can you solve einstein s riddle. The following riddle is claimed to have been written by einstein as a boy. The hardest riddle made by albert einstein was made in the late 1800s and claimed that 98 of the world s population can t solve it.