The player can't use any switch in order to solve the puzzle. So the player has to collide with each switch in order. Like in the screenshot.
For example, the puzzle doesn't respond if you touch/collide the second switch, you have to first jump over the second switch in order to collide with the first switch.
That is why I said first, second, third. So the first switch on top, the second switch to the left of the trigger puzzle event cube, and third to the lower left of the first switch.