An extension for a rotatable puzzle piece that is used with a sliding puzzle, and a sliding puzzle that uses the same. In one aspect the puzzle has an extension for a rotatable puzzle piece, comprising a housing including a backing frame and a front member connected one to the other. The backing frame is formed with a fixedly disposed first recess defined by walls formed on the backing frame. A fixedly disposed second recess is defined by the front member. The puzzle also includes a plurality of puzzle pieces disposed in the second recess, wherein each of the pieces is individually slidably movable in the second recess, whereby the pieces are movable so as to be arranged in a desired solution in the second recess. A channel operatively communicates with the second recess such that the pieces can be moved into the channel and rotated therein, thereby rotationally reorienting the pieces. The rotationally reoriented pieces can be moved into the second recess in an attempt to solve the puzzle.