Slide Puzzle – 15 Number Puzzle
About Slide Puzzle – 15 Number Puzzle
The 15-puzzle is a sliding tile puzzle consisting of a 4×4 grid with numbered tiles 1-15 and one empty space. The goal is to arrange the tiles in numerical order by sliding them into the empty space. It’s a classic problem-solving challenge that dates back to the 1880s.
How to Play
Click any tile adjacent to the empty space to slide it into that space. Arrange tiles so numbers 1-15 are in order from left to right, top to bottom, with the empty space in the bottom-right corner. The puzzle is shuffled at start — solve it in as few moves as possible.
Tips and Strategy
- Solve row by row. Fix the top row first, then the second, then work on columns.
- Position the last two. The last two tiles of each row need a special technique to swap.
- Keep the empty space mobile. Plan your moves so the gap goes where you need it.
- Count your moves. Track efficiency — fewer moves means better solving.
Game Features
- 4×4 grid with tiles 1-15
- Click to slide adjacent tiles
- Move counter
- Shuffled starting position
- Win when tiles are in order
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