Slide Puzzle

Slide numbered tiles into the correct order — classic 15 puzzle brain teaser!

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Use arrow keys or click/tap tiles adjacent to the empty space to slide them.

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Frequently Asked Questions about Slide Puzzle

How do you play Slide Puzzle?
Click or tap a tile adjacent to the empty space to slide it into that gap. Rearrange all the numbered tiles into the correct order, starting from 1 in the top-left corner. The puzzle is solved when every tile is in its proper position.
Is Slide Puzzle free?
Yes, completely free in your browser with no download or sign-up needed. Multiple grid sizes are available and all are free to play.
What grid sizes are available?
You can choose from multiple sizes. The classic 4x4 (15-puzzle) is the most popular, but smaller grids are great for beginners and larger grids offer an extreme challenge for advanced players.
Is every slide puzzle solvable?
Exactly half of all possible tile arrangements are solvable. The puzzles in this game are always generated in a solvable state, so you never have to worry about getting an impossible configuration.
What are some strategies for solving the slide puzzle?
Solve the top row first, then the left column, and work inward. Place corner tiles and edges before filling in the middle. For the last two rows, solve them together using a technique where you cycle tiles into position without disturbing completed sections.

About Slide Puzzle

Slide Puzzle is the digital version of the classic tile-sliding challenge that has captivated puzzle lovers for over a century. A grid of numbered or image tiles sits with one empty space, and you slide adjacent tiles into the gap to rearrange them into the correct order. The constraint of only being able to move tiles next to the empty space creates a uniquely frustrating and rewarding solving experience. What seems like simple shuffling actually requires careful sequencing, as moving one tile into place can displace others you have already positioned. Multiple grid sizes from 3x3 to 5x5 offer escalating difficulty, and a move counter encourages you to find more efficient solutions. It is a timeless test of spatial planning and patience.

How to Play

  1. Click or tap a tile adjacent to the empty space to slide it into the gap
  2. Work on positioning the top row first, then the left column, solving section by section
  3. Avoid disturbing tiles you have already placed by planning your moves ahead
  4. Arrange all tiles in the correct numerical or image order to complete the puzzle