Empty squares appeared in the labyrinth. You need to fill them out! This can only be done with the help of a large red block that moves through the maze from side to side until it stops. It is important to monitor the movement of the square and plan its movement in advance. After all, there are quite a few traps on the way, falling into one of which, the block can jam. Don't let this happen if you want to avoid a restart. Complete all levels, unravel all puzzles and fill in all empty squares. Good luck in the game!