Sliding Puzzle

Understand the Board
You start with an n×n grid (e.g. 3×3, 4×4) filled with numbered or image tiles, and one empty space. The goal is to reorder tiles in ascending order, or reconstruct the original picture.

Slide Tiles One at a Time
Only tiles adjacent to the empty space can move. Tap or click an eligible tile to slide it into the blank slot and shift the board gradually toward the correct configuration.

Sequential Moves Lead to Completion
Strategically move tiles—the order matters. Usually players arrange the top rows first, then proceed row by row until the grid is solved.

Track Moves or Time (Optional)
Some versions count moves or record times to encourage optimal performance. Try to minimize both for better results.

Undo & Reset Features
Many implementations allow undoing recent moves or restarting the level, supporting trial-and-error and learning strategies.

Increase Difficulty Over Levels
Puzzle sizes may grow (e.g. from 3×3 to 5×5 or higher), increasing complexity and requiring longer move sequences to solve.