How to Play 15 Puzzle

THE PLAYBOOK · RHEFM

How to play 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. Keep the game area visible while you use its controls. Read the objective before making your first input. Use the example below to understand a decision.

Review a difficult moment

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.

Your goal

Arrange 1 to 15 in reading order with the empty square at the bottom right. An attractive position is not enough unless the goal is met. Follow this game’s rules rather than another version’s.

Step by step

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.

Controls

Use the on-screen controls with a mouse or touch. A careful first action helps you become familiar with the layout. Check any mode label before starting.

A useful example

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. Notice the change in the playing area.

Watch out for this

A distant tile cannot jump across other tiles. Check the rule before repeating the action. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.

Common questions