Fifteen puzzle (www.alexatnet.com/node/68)
Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square are the names of the famous Noyes Chapman's puzzle that consists of a grid of numbered squares with one square missing. The goal of this sliding puzzle is to un-jumble the squares by only making moves which slide squares into the empty space.
Author: Alex Netkachov
Source: View XML
Related module: Rubik's Cube


