A sliding puzzle, sliding block puzzle, or sliding tile puzzle is a combination 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 colours, patterns, sections of a larger picture (like a jigsaw puzzle), numbers, or letters (Wikipedia).
https://www.figma.com/design/YtlY7Df2ggByGtDNJPVh1u/Slide-Puzzle?node-id=0-1&m=dev&t=YjPjyeCPAxNxJfve-1
If you want to solve the puzzle, you can learn from this video below:
How To Solve a 4x4 Sliding Puzzle by Steven Burrell | YouTube
https://www.youtube.com/watch?v=NXRIrP1k4dE