Challenge Your Mind with the Classic 15 Puzzle Game!

Step into the world of the 15 Puzzle, a timeless puzzle sliding game that has captivated minds for generations. This classic number game is all about arranging numbers in a square grid, where the goal is to order the numbers from one to fifteen (or the maximum number, depending on the size of the game). With varying grid sizes like 3x3 (eight stones) and 4x4 (fifteen stones), the 15 Puzzle offers endless fun and brain-teasing challenges.

How to Play 15 Puzzle Classic Number Game?

In the 15 Puzzle, you’ll find a grid with one space left free. Your task is to shift the stones into the empty space, moving them around until every stone is in its correct place. The numbers are sorted in rows, continuing from one row to the next. You win the game when all the stones are ordered correctly.

Game Features

Our 15 Puzzle game offers a range of exciting features to keep you engaged:
✅ Multiple Grid Sizes: Choose from different game sizes, including 3x3 and 4x4 grids.
✅ Achievements & Leaderboards: Unlock various achievements and compete with other players on global leaderboards based on the number of moves or the time taken to complete the puzzle.
✅ Strategic Play: Take your time to plan your moves, as the timer starts only when you make your first move. Shift two or more stones at once to optimize your strategy and count them as a single move.

Historical Origins

The 15 Puzzle was invented by Noyes Palmer Chapman, a postman who introduced a similar game to his friends in 1874. The puzzle became popular in Hartford, Connecticut, where it was produced as Christmas gifts by students in 1879. Initially, the stones had to be placed by hand in any irregular order, adding to the challenge and fun of the game.

The Mathematics Behind the Puzzle

Our 15 Puzzle game is generated randomly, ensuring that no number is in its correct position at the start. To ensure solvability, a special parity algorithm is used. If a generated setup is unsolvable, the last two numbers are swapped to create a valid parity. This means you’ll always have a solvable puzzle to enjoy!

Why Play the 15 Puzzle?

Playing the 15 Puzzle is a great way to challenge your mind and improve your problem-solving skills. It's a classic number game that combines fun with mental exercise, making it perfect for players of all ages. Whether you’re looking to beat your best time, achieve the fewest moves, or simply enjoy a relaxing game, the 15 Puzzle offers endless entertainment.

Get Started Today!

Download the 15 Puzzle game now and start sliding your way to victory. Compete with friends, unlock achievements, and climb the leaderboards. Don’t miss out on the fun and challenge of this classic puzzle sliding game. Download now and test your skills!

Recent changes:
* New instruction pages
* Fixed a bug that let the app crash when using the back button in the action bar (sorry!)