What is the most famous puzzle in history?

It's hard to definitively say which puzzle is the *most* famous in history, as fame is subjective and can change over time. However, some strong contenders for the title include:

* The Rubik's Cube: This iconic puzzle, invented in 1974 by Ernő Rubik, is arguably the most popular puzzle ever. Its simple design and endless combinations have captivated people of all ages for decades.

* The Enigma Machine: While technically not a "puzzle" in the traditional sense, this German cipher machine played a crucial role in World War II and its decryption was a major feat of codebreaking. Its story is famous and has been depicted in films and books.

* The Tower of Hanoi: This mathematical puzzle, invented in the 19th century, is famous for its simple rules and surprisingly complex solution. It has been featured in many books and films, and its recursive nature makes it a fascinating study in problem-solving.

* The Sudoku: This logic puzzle, gaining popularity in the late 20th and early 21st centuries, has become a global phenomenon. Its simple rules and satisfying challenge have made it a favorite pastime for millions.

Other puzzles that could be considered famous include:

* The Fifteen Puzzle: This sliding tile puzzle, popular in the late 19th century, was the first mass-produced puzzle.

* The Sphinx's Riddle: This ancient riddle, posed by the Sphinx to travelers in Greek mythology, is famous for its difficulty and its association with the mythical creature.

Ultimately, the "most famous puzzle" is a matter of opinion and can vary depending on cultural context and personal preferences.