The 15 puzzle, sometimes called GameofFifteen, Mystic Square, Gem Puzzle or Boss Puzzle is a typeofsliding puzzle. The goal of the 15 puzzle is to arrangenumberedtiles in the correct order, by manipulating a single emptyslot.

The classic 15 puzzle (Pyatnashki) takes a fresh andaestheticform in this simple yet elegant app.

Features:
- Choice of 3x3, 4x4 or 5x5 difficulties
- Customizable color palette
- Timer and moves counter
- Best results
- Sounds and music