Slide Puzzle
Classic 15-puzzle - slide numbered tiles to put them in order. Choose 3×3, 4×4 or 5×5 sizes.
Classic 15-puzzle - slide numbered tiles to put them in order. Choose 3×3, 4×4 or 5×5 sizes.
This free Slide Puzzle from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.
How to use the Slide Puzzle
- Open the tool - you are already here, nothing to install.
- Enter your input in the form above.
- Click the action button to run the tool. Results appear instantly.
- Copy the result to your clipboard, or download it as a file.
What you can do with the Slide Puzzle
- Speed up daily work without juggling multiple websites.
- Run quick checks before publishing or sending.
- Verify or transform data without writing any code.
- Free alternative to paid desktop or SaaS tools.
Why use KX Toolkit's Slide Puzzle
- Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
- Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
- Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
- Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
- One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.
Tips for the best results
For best results, keep your input as clean as possible - remove extra whitespace or formatting before running the tool.
Related Browser Games
If you find this tool useful, explore the full Browser Games collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.
How do I play the slide puzzle?
Numbered tiles 1 through 15 are scrambled in a 4x4 grid with one empty space. Click or tap a tile next to the empty space and it slides into the gap. Your goal is to arrange every tile in numerical order, with the empty space ending up at the bottom right. The classic 15 puzzle looks simple but is genuinely tricky.
What is the best way to solve it?
Solve the top row first, then the left column, then the next row, and so on, always preserving the parts you have already solved. The bottom right two by two is the trickiest because the last two tiles must rotate together. Practice this corner first on smaller puzzles. With a methodical approach a 4x4 can usually be solved in under a minute.
Are all scrambles solvable?
Only half of all random arrangements of a 15 puzzle are solvable, due to a parity rule from permutation theory. The game generates only valid scrambles, so you will never face an unsolvable puzzle. You can verify solvability by counting inversions and the row of the blank space, but the game handles that for you behind the scenes.
How are moves and time tracked?
A move counter increments each time you slide a tile, and a timer starts on the first move and stops when the puzzle is solved. The summary screen shows both numbers. Your best move count and best time are saved separately, because some players optimise for speed while others optimise for elegance, and both records are worth chasing.
Are there other grid sizes?
The default 4x4 grid with 15 tiles is the classic. A 3x3 mode with 8 tiles is great for kids or a quick warm up, and a 5x5 mode with 24 tiles is a serious challenge that can take many minutes even for experienced players. Switch sizes from the menu before starting a new puzzle, because changing size resets your active grid.
Are best scores saved?
Yes. Your best move count and best time are saved separately for each grid size in browser local storage and shown above the puzzle. Beating either record triggers a celebration. Clearing browser data resets all records. There is no online leaderboard, so the only person to beat is the one you were last week, which is the most rewarding kind anyway.
No reviews yet
Be the first to share your experience with the Slide Puzzle.