Fifteen Puzzle Game Online

How to use

1. Click "New Game" to start a new shuffled puzzle.
2. Click on any tile adjacent to the empty space to slide it.
3. Arrange all numbers from 1 to 15 in order from left to right, top to bottom.
4. The empty space should end up in the bottom-right corner.
5. Try to complete the puzzle in as few moves as possible!

What is the Fifteen Puzzle?

The Fifteen Puzzle (also known as the 15-puzzle) is a classic sliding tile game invented in the 1870s. It consists of 15 numbered tiles on a 4×4 grid with one empty space.

The goal is to arrange all tiles in numerical order by sliding them into the empty space one at a time. The puzzle requires strategic thinking and spatial reasoning.

Solving the 15-puzzle develops logical thinking, improves concentration, and trains the ability to plan multiple moves ahead.

Strategies for Solving the 15-Puzzle

Use a top-to-bottom approach: first arrange the top row (tiles 1-4), then the second row (5-8), and finally solve the bottom two rows together.

For the bottom rows, use rotation techniques — cycle tiles in circular patterns to place them correctly without disturbing already-solved positions.

Regular practice is the best way to improve. Focus on reducing move count rather than just completion speed.