The aim of the game is to move all the boxes to the locations marked with a cross. You can only move one box at a time. You can only push boxes, not pull. You can not walk through walls and chests. The puzzle is solved when all boxes are on a marked spot.
On touch screens drag the shovel to move him. On devices with a keyboard, use the cursor keys to move the shovel. Use the backspace key you make your last move undone.