This is a variation of an old puzzle called "15," in which you slide numbered tiles around to
scramble them, and then (try to) get them back into the right order again.
Our version consists of 15 picture pieces and one blank space
(represented in our version by a black square) that you can move them into.
In our version, to "slide" a piece into the blank square, just click the piece.
Only pieces immediately next to the black square can be moved.
To start solving the puzzle, first click "Scramble" once or twice to mix up the pieces, or move them
around manually until they're mixed up.
Then move the pieces around until they are in the right order.
Can every puzzle be solved?