Press the right switch to turn on the lights, in order to make it easier to win in the 100 floors level 42.
Triangle Shape at Top Left, diamond shape at bottom right, slide the left door to left, slide the right door to right.
Then you can see another 2 shapes there: Square shape at top right, circle shape at bottom left.
Slide the top door to top then slide the bottom door to bottom.
Follow the shapes that you remember just now, you can slide back the door if you cannot remember.
Once the shape correct, the door will be opened and you win the game 100 floors level 42
Now continue to the 100 floors level 43, or back to the 100 floors level 41