I found this puzzle following a comment made by Caulbox (for Calendar Magic) It’s called Fifteen Magic.
Fifteen Magic is an implementation of the classic Fifteen Puzzle
dating back to the 1800s. When the New Game command button is left
clicked, the 15 numbered squares are randomly shuffled and the
objective is to restore the 4x4 grid to its original state. Left
clicking any square horizontally or vertically adjacent to the empty
yellow square causes it to move to that empty square. The challenge is
to figure out a series of such moves to achieve the desired
objective.
Vista Compatible
You can download it from the following page: