A sliding puzzle, sliding block puzzle, orsliding tile puzzle is a tour puzzle that challenges a player toslide (frequently flat) pieces along certain routes (usually on aboard) to establish a certain end-configuration. The pieces to bemoved may consist of simple shapes, or they may be imprinted withcolors, patterns, sections of a larger picture (like a jigsawpuzzle), numbers, or letters.

You have to slide the tiles to reassemble a picture, by touchingthe block you want to move.