Game guide · YOUDIYOU
Understand the basics of 15 Puzzle
15 Puzzle gives you a focused activity to play in your browser. Arrange 1 to 15 in reading order with the empty square at the bottom right. Check the relevant rule before repeating a move. Identify the playing area and the controls you need. Use the example below to understand a decision.
Build familiarity through play
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Use the example to check your reasoning.
Aim for this result
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. Try to explain the aim in your own words.
Making your moves
- Select a tile directly beside the empty square.
- The tile slides into the gap; diagonal moves are not allowed.
- Use Undo to step back one move.
- Finish the ordered board, or choose New puzzle.
Input guidance
Use the on-screen controls with a mouse or touch. Use the control method described here for this activity. Use one clear input at a time.
An example before you play
When the gap is in the last square, only the tile above it and the tile to its left can move into it. Apply the same reasoning to the position in your own round. Look for the relevant detail.
One detail worth checking
A distant tile cannot jump across other tiles. A different version of the game may use a different rule. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.
Helpful answers for players
For a quick reminder, 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.
For this browser game, 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.
Before I begin, what should I watch out for in 15 Puzzle?
For clarity: A distant tile cannot jump across other tiles.
When I return, 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.
While reading the Guide, which play mode does 15 Puzzle use?
For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
For my first round, where should I start with 15 Puzzle?
Keep this in mind: Select a tile directly beside the empty square.
While learning, do I need an account or a payment for 15 Puzzle?
Here is the relevant explanation: No player account or payment is needed. Game scores are recreational results, not cash prizes.
On this playing page, how can I find 15 Puzzle again?
Here is the relevant explanation: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
For my first round, 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.
