Sliding Puzzle (15-Puzzle)

The 15-Puzzle, also known as the sliding puzzle, is a classic mechanical puzzle that has entertained people for over a century. The puzzle consists of a 4x4 grid containing 15 numbered square tiles and one empty space. Tiles adjacent to the empty space can be slid into it, rearranging the grid.

The goal is to rearrange the tiles from a shuffled configuration into numerical order, with the empty space at the bottom-right corner. Despite its simple rules, the puzzle offers a satisfying challenge that improves problem-solving skills and spatial reasoning.

This browser-based version lets you play the classic 15-Puzzle anytime, anywhere. Track your moves and time as you try to beat your personal best. The game is completely free and works on both desktop and mobile devices.

• Start the game: Click the "Shuffle" button to randomize the tiles and begin playing.
• Move tiles: Click or tap a tile that is adjacent (up, down, left, or right) to the empty space to slide it into that space.
• Goal: Arrange all 15 tiles in numerical order from 1 to 15, left to right and top to bottom, with the empty space in the bottom-right corner.
• Track progress: Watch your move counter and timer to see how efficiently you solve the puzzle.
• Reset: Click "Reset" to stop the current game and start fresh.
• Win: When you complete the puzzle, you'll see your final stats and can play again.

• Work row by row: Complete the top three rows first, keeping the last two columns for last. This systematic approach reduces complexity.
• Position tiles in order: Place tile 1 in the top-left, then 2 next to it, then 3, and so on. Complete each row before moving to the next.
• Don't disrupt completed rows: Once a row is correctly placed, try not to disturb it unless absolutely necessary, as it can be difficult to restore.
• Use the empty space strategically: Think ahead about where you want to move tiles, positioning the empty space to allow those moves.
• Practice pattern recognition: With practice, you'll recognize common tile arrangements and learn efficient sequences to solve them.
• Stay patient: The 15-Puzzle requires patience. If you get stuck, take a break and come back with fresh perspective.