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15 Puzzle: how a round works

Try a more deliberate round

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Refer to the controls when needed.

Your goal

Arrange 1 to 15 in reading order with the empty square at the bottom right. The feedback beside the game helps you follow the round. Check the rules when you are unsure.

How a round unfolds

  1. Select a tile directly beside the empty square.
  2. The tile slides into the gap; diagonal moves are not allowed.
  3. Use Undo to step back one move.
  4. Finish the ordered board, or choose New puzzle.

Keyboard and screen controls

Use the on-screen controls with a mouse or touch. A careful first action helps you become familiar with the layout. Use one clear input at a time.

Put the rules into context

When the gap is in the last square, only the tile above it and the tile to its left can move into it. Compare this with the rule that governs the move. Look for the relevant detail.

Notice this detail

A distant tile cannot jump across other tiles. Compare the situation with the worked example. Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round.

Read these answers for extra help

On this playing page, what is the goal of 15 Puzzle?

For clarity: Arrange 1 to 15 in reading order with the empty square at the bottom right.

How do I control 15 Puzzle?

Keep this in mind: Use the on-screen controls with a mouse or touch.

When I return, what example helps explain 15 Puzzle?

Keep this in mind: When the gap is in the last square, only the tile above it and the tile to its left can move into it.

What should I watch out for in 15 Puzzle?

A distant tile cannot jump across other tiles.

For a quick reminder, what format does 15 Puzzle offer?

The key detail is this: Play using the solo mode shown on this page. Read the controls before starting a new round.

For my first round, which play mode does 15 Puzzle use?

Here is the relevant explanation: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

As a new player, where should I start with 15 Puzzle?

The key detail is this: Select a tile directly beside the empty square.

As a new player, do I need an account or a payment for 15 Puzzle?

For clarity: No player account or payment is needed. Game scores are recreational results, not cash prizes.

Before I begin, how can I find 15 Puzzle again?

For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

For this browser game, how do I report an issue with 15 Puzzle?

Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.