Trilogic Game

The Trilogic game was a game played by the Doctor and the Celestial Toymaker. The rules are as follows: There is a tower made up of 10 plates, each one smaller than the one it is on top of, forming a pyramid-like shape. There are three spaces, A, B, and C where the pieces can be moved. The goal is to move the entire stack from A to C. However, only one piece may be moved at a time, and a piece cannot be placed on top of one smaller than it. The Celestial Toymaker gave the Doctor only 1023 moves to finish the game, or he would be trapped in the Toymaker's world forever.(DW: The Celestial Toymaker)

Behind the scenes

 * The Trilogic game resembles the game Tower of Hanoi.