There are three places to put the barrels and four barrels. Rather than varying sizes of barrels, it uses varying numbers on the barrels which must add up to the number on the platform.
One competitor, Shii Ann, a computer programmer, seemed to have no clue at all of how to solve it, leading to some Epileptic Trees from fans about both her meta-game strategy and the actual backstage operations of the show season 5), a large five-disk version of this puzzle was an immunity challenge. The Doctor realises that the Toymaker's world will vanish once he makes the last move, so he finishes it inside the TARDIS.
In the Doctor Who serial "The Celestial Toymaker" (now a lost story except for the final episode, but available in full on audio), the Doctor is challenged to solve a 10-disc version of the Towers of Hanoi, known as The Trilogic Game.Towers of Hanoi featured as an Aztec Zone game in the second series of The Crystal Maze.Note that if this legend were true, even if the priests were able to move one disc per second, it would take 584,942,417,356 years, 26 days, 7 hours and 15 seconds for them to solve it - making it a scientifically accurate prophecy. The legend was invented by Lucas himself when he distributed the original puzzle under the Significant Anagram N. Furthermore, the prophecy states that when the puzzle is finally solved, the world will end. well, Hanoi where the priests of Brahma, in accordance with an ancient prophecy, basically spend their time playing the game.
There is an (apocryphal) legend about a tower in. The player can only move the top disc on any stack, and cannot place a bigger disc on a smaller disc. The objective is to get the discs from the pole on one side to the pole on the other by moving the discs, one at a time, from one pole to another, in as few moves as possible. The player is given three poles in a row, and at least three discs of different sizes stacked on the pole on one side. A classic Stock Puzzle, invented in 1883 by Edouard Lucas.