Slide Puzzle

The Digital Huarong Road is a puzzle game that tests logical thinking and spatial reasoning abilities. The game board is a square grid array, and there are blocks marked with numbers placed on the board, with one cell being an empty space.
The rules of the game are very clear: players can only move the number blocks by sliding the number blocks adjacent to the empty space into the empty space. For example, if the empty space is on the right side of the number 5, then the number 5 can be slid to the right into the empty space. The ultimate goal of the game is to arrange the disordered number blocks in order, starting from 1, and form an orderly digital square array. In this process, players need to constantly plan the moving path and skillfully use strategies to complete the challenge quickly.