Using the theory of computational complexity, Sokoban can be investigated. The game ends when all stones are in goal positions.To push a stone in the relevant direction the player has to be in the appropriate immediately neighbouring square.No stone or the player can go through a wall or other stones in a move.The player can only push (no pulling) one stone one square at a time in the four directions N, E, W, S (no diagonal push).The player can move one square at a time in the four directions N, E, W, S.When all of the boxes are on the storage spots, the puzzle is finished.

Boxes cannot be pulled or pushed against walls or other boxes. The player can also enter a box to be pushed into the adjacent area. The player is limited to the grid and can only advance onto empty squares in either a horizontal or vertical direction (never through walls or boxes). Some floor squares have boxes on them and some are designated as storage areas. 1.2 RulesĮach square in the grid, which is used to play the game, represents a wall or a floor. Sokoban is a seemingly simple board game where a player has to push all stones (also called crates/boxes) available on the board to final/goal positions on a board that is a maze.

Sokoban Solver in Python using A* Search and Dynamic Programming, and working deadlock-detection states.

Online sokoban solver