滑动拼图（也称为滑块拼图，或滑动瓷砖拼图）
Sliding puzzle (also known as sliding block puzzle, or sliding tile puzzle) is a tour puzzle that challenges a player to slide (frequently flat) pieces along certain routes (usually on a board) to establish a certain end-configuration. The pieces to be moved may consist of simple shapes, or they may be imprinted with colors, patterns, sections of a larger picture (like a jigsaw puzzle), numbers, or letters.