Sokoban

 is a puzzle in Puzzledom.

How to play
The goal of the puzzle is to push all of the boxes onto the goals. Listed below are the specific rules to solve a classic puzzle:
 * Only one box can be pushed at a time.
 * A box cannot be pulled.
 * The player cannot walk through boxes or walls.
 * The puzzle is solved when all boxes are on the goals.

Classic

 * Novice A
 * Novice B
 * Regular A
 * Regular B
 * Advanced
 * Expert
 * Master