Did not know this is possible me thinks there are other bugs and functions still waiting to be discovered.
Are you a wizard?! I understand proximity sensor so little that I don't even claim to know what it is, but you've managed not only to understand it, but to make a genuinely intriguing mechanism and build a maze around it. My hat is off to you, my friend.
Wow... I don't even know how you managed to build this level. Really amazing and... disturbing! Thanks!