Tower of Hanoi  -  Adesktop puzzle

by Alan Wrigley

The Tower of Hanoi is a well-known puzzle. It consists of a tower of blocks, each smaller than the one below, which must be moved to a new site one block at a time. The catch is that there is a limited number of sites, and a block cannot be placed on top of a block smaller than itself.

The program can be run from the RISC User menu system, or by double-clicking on its icon in a directory viewer. A window opens showing three sites, with a tower of coloured blocks on the left-hand site. The tower must be moved to one of the other sites.

Blocks are moved by dragging the topmost block on any site to a new position. Only the topmost block can be moved at any time. If you try to drop the block onto a block which is smaller than itself, a beep will sound and the move will be disallowed. If a valid move is made, the block will take up its new position. A move counter is displayed in the upper part of the window.

When the complete tower has been re-sited, the move counter will indicate that you have finished the puzzle.

Clicking Menu over the window opens a menu with two options. Info leads to a standard info box. New game resets the move counter to zero and moves the complete tower back to the left-hand site ready to start a new game.

Copyright  RISC User 1995
