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Getting started with 15 Puzzle

A small practice goal

Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Use the example to check your reasoning.

The objective of a round

Arrange 1 to 15 in reading order with the empty square at the bottom right. Use the instructions to see which actions move you towards it. Review the board or playing area as it changes.

The steps to play

  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.

The controls to know

Use the on-screen controls with a mouse or touch. A careful first action helps you become familiar with the layout. Read the example below alongside these instructions.

Try this example

When the gap is in the last square, only the tile above it and the tile to its left can move into it. Your next round may have a different position, so inspect it before acting. Look for the relevant detail.

Pay attention to this rule

A distant tile cannot jump across other tiles. Compare the situation with the worked example. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.

Questions about this game

Before I begin, what is the goal of 15 Puzzle?

The key detail is this: Arrange 1 to 15 in reading order with the empty square at the bottom right.

While reading the Guide, how do I control 15 Puzzle?

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

While learning, what example helps explain 15 Puzzle?

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

When I return, what should I watch out for in 15 Puzzle?

Here is the relevant explanation: A distant tile cannot jump across other tiles.

While learning, what format does 15 Puzzle offer?

Keep this in mind: 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?

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

For this browser game, where should I start with 15 Puzzle?

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

For a quick reminder, do I need an account or a payment for 15 Puzzle?

Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.

How can I find 15 Puzzle again?

The key detail is this: 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.