About 15-Puzzle
The 15-puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and many others) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing.
The object of the puzzle is to place the tiles in order by making sliding moves that use the empty space.
More info at http://en.wikipedia.org/wiki/15_puzzle
by M####:
Works well. No bugs that I saw. Would be great if you could click on the end of a row and shift all three tiles at once instead of having to press the three tiles individually. Also would be cool to have an "win" condition test and congratulate the player. Thanks.