I did it but I still don't understand "Push Back" xD
im so stupid
"Push back" is the same principle as "push" except that you don't know which direction to push from. There are indications that tell you which direction to push from. For the first push, there is an arrow which tells you, for the second push, you have to guess, for the third push, there is another clue but I won't spoil it :)