If you had the 15 slide puzzle in childhood you won't fail to try this software. For some it will be an exciting discovery. The puzzle consists of a box with 15 numbered tiles that can be slided around to be arranged from 1 to 15.
The freeware implements a shuffling algorithm that performs scrambling by random moving; therefore the puzzle is always solvable. Whats more, you have the possibility to turn on simple sound effects and use different color schemes.