H15 - the 15 puzzle

The 15 puzzle known also as Game of Fif is a sliding puzzle consisting of a frame of 4x4 shuffled numbered tiles with one missing. The object of this puzzle is to place the tiles in the correct order from 1 to 15 by drag'n'dropping moves.How to play:- Click "Start new game" button to start a new game. A game board appears.- Click "Start" button on the game board shuffles the tiles and starts the clock.- A black square on the game board represents the missing tile. You can move the tiles to the empty place by dragging them (click is enough).- After you finish the game is evaluated. Clicking the "Statistics" button you can see your best and average score.- Clicking "Give up" you can discard your game. The game will end and your current score won't be calculated to the statistics.- If you click "back" or "home" button on your cell phone while playing the game the game is interrupted and its intermediate state is stored. Clicking "Continue last game" you can finish your interrupted game.Have fun!